Bluebulb Projects' The Measure of Things presents:
2,100 is about two-and-a-half times the number of Population of Vatican City.
In other words, it's 2.490 times the count of Population of Vatican City, and the count of Population of Vatican City is 0.4020 times that amount.
(a.k.a. Vatican City State, a.k.a. Stato della Città del Vaticano
, a.k.a. Status Civitatis Vaticanae
) (Rome, Italy) (2014 estimates; permanent residents only)