It's about fourteen-and-a-half times the number of Moons in our Solar System.
In other words, the count of Moons in our Solar System is 0.0694 times 2,100.(2015 figures) (confirmed moons only; dwarf planet satellites not included)
Astronomers and other scientists have confirmed the presence of 146 moons orbiting the major planets of our Solar System. About one third of those moons — 53 — are in orbit around the planet Saturn
It's about fifteen-and-a-half times the number of Union Stations in the United States.
In other words, the count of Union Stations in the United States is 0.0641 times 2,100.(a.k.a. Union Terminal; a.k.a. Joint Station; a.k.a. Union Depot) (2016 figures)
It's about one-fifteenth the number of McDonald's Locations in the World.
In other words, the count of McDonald's Locations in the World is 17 times 2,100.(2015 figures) (approximate)
Operating in 119 countries, there are currently 36,000 McDonald's locations worldwide. From 1955 thru 1993, many McDonald's locations advertised the number in billions of hamburgers sold on their external signs, but abandoned theses updates after the figure passed 100 billion.
It's about one-twentieth the number of Seats in Fenway Park.
In other words, 2,100 is 0.056648 times the count of Seats in Fenway Park, and the count of Seats in Fenway Park is 17.6530 times that amount.(2013 figures; daytime capacity) (a.k.a. The Cathedral of Boston) (Boston, Massachusetts)
Fenway Park, the home of the Boston Red Sox baseball team, can accommodate 37,071 spectators when configured for daytime seating. Fenway Park holds the record for most consecutive sellout games, with a streak of 794 sellouts that ended in 2013. This figure is a dramatic turnaround from the attendance in 1965, which was at times as low as just 500 people.
It's about eighteen times the number of Elements on the Periodic Table.
In other words, 2,100 is 17.80 times the count of Elements on the Periodic Table, and the count of Elements on the Periodic Table is 0.0562 times that amount.(a.k.a. Periodic Table of the Elements, a.k.a chemical elements) (confirmed elements as of 2016)
From element number one, hydrogen, to element one-hundred eighteen, ununoctium, there are 118 confirmed elements on the Periodic Table. Ninety-four of the elements exist in nature, and the remaining twenty-four have only been synthesized in labs (not having occurred naturally in the time since scientists have begun researching them)
It's about twenty times the number of Wolves in Yellowstone National Park.
In other words, 2,100 is 20.20 times the count of Wolves in Yellowstone National Park, and the count of Wolves in Yellowstone National Park is 0.0495 times that amount.(a.k.a. Henihco'oo; a.k.a. Héetíhco'oo) (December 2014 figures; Wyoming Park area)
It's about one-twenty-fifth the number of Seats in New Yankee Stadium.
In other words, 2,100 is 0.04176 times the count of Seats in New Yankee Stadium, and the count of Seats in New Yankee Stadium is 23.9460 times that amount.(2014 figures for 2009 Stadium; seating figures only) (a.k.a. Yankee Stadium, a.k.a. The Stadium, a.k.a. The House that George Built) (South Bronx, New York City, New York)