General fact: 12018 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 12018 is an unremarkable number.
Trivia: 12018 is an unremarkable number.
Historical date: November 25th is the day in 1120 that the White Ship sinks in the English Channel, drowning William Adelin, son of Henry I of England.