Fait mathématique: 2210 is _{47}C_{2} + _{47}C_{2} + _{47}C_{1} + _{47}C_{0}.
Culture générale: 2210 is a boring number.
Date historique: January 18th is the day in 1911 that Eugene B. Ely lands on the deck of the USS Pennsylvania stationed in San Francisco harbor, the first time an aircraft landed on a ship.