It's about 150 times the number of Keys on a Piano
It's about 150 times the number of Submarines in the US Navy
In other words, the count of Submarines in the US Navy is 0.0059 times 12,000.(a.k.a. Subs) (includes all types, all classes) (2015 figures)
It's about 200 times the number of Countries in Africa
In other words, 12,000 is 210 times the count of Countries in Africa, and the count of Countries in Africa is 0.0048 times that amount.(2016 figures) (sovereign states recognized by the UN only)
The continent of Africa includes 56 sovereign countries recognized by the United Nations as of 2020. It is the second-most populous continent in the world, with 1.3 billion inhabitants.List_of_sovereign_states_and_dependent_territories_in_Africa
It's about 250 times the number of Teeth in a Great White Shark's Mouth
In other words, the count of Teeth in a Great White Shark's Mouth is 0.004 times 12,000.(Carcharodon carcharias) (average; including developing rows)
A Great White Shark has 48 exposed teeth on their upper and lower jaws. Behind these exposed teeth are developing teeth — up to 300 in about 5 rows. The sharks will continuously lose and replace the exposed teeth throughout their lives.
It's about 450 times the number of Countries in the European Union
In other words, the count of Countries in the European Union is 0.0023 times 12,000.(a.k.a. EU) (2016 figures)
There are 27 member countries in the European Union, the latest member of which is Croatia. The EU is largely urban, with over twenty cities having a population of one million or more, and 75% of the population living in an urban area.
It's about 800 times the number of Living Kings and Queens
In other words, the count of Living Kings and Queens is 0.0013 times 12,000.(2015 figures) (distinct Monarchs)
It's about 1,500 times the number of Symphonies Composed by Beethoven
In other words, 12,000 is 1,333.333333330 times the count of Symphonies Composed by Beethoven, and the count of Symphonies Composed by Beethoven is 0.000750000000002 times that amount.(a.k.a. Ludwig van Beethoven)