Fait général: 21071 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 21071 is a boring number.
Culture générale: 21071 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: September 8th is the day in 1380 that Battle of Kulikovo – Russian forces defeat a mixed army of Tatars and Mongols, stopping their advance.