General fact: 220 is the SMTP code meaning "service ready".
Mathematical fact: 220 is the sum of four consecutive primes (47 + 53 + 59 + 61).
Trivia: 220 is the common voltage in many countries.
Historical date: August 7th is the day in 2007 that Barry Bonds of the San Francisco Giants breaks baseball great Hank Aaron's record by hitting his 756th home run.