Fait général: 81821 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 81821 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 81821 is a boring number.
Date historique: January 7th is the day in 1991 that Roger Lafontant, former leader of the Tonton Macoutes in Haiti under François Duvalier, attempts a coup d'état, which ends in his arrest.