Fait général: 21291 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 21291 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 21291 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: April 16th is the day in 2001 that India and Bangladesh begin a five-day border conflict, but are unable to resolve the disputes about their border.