Fait mathématique: 2119 is a value of n for which |cos(n)| is smaller than any previous integer.
Culture générale: 2119 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: October 19th is the day in 1950 that the People's Liberation Army takes control of the town of Qamdo; this is sometimes called the "Invasion of Tibet".