Two hundred twenty (220, CCXX), is the natural number following two hundred and nineteen and preceeding two hundred and twenty-one. Its divisors are 2, 4, 5, 10, 11, 20, 22, 44, 55 and 110, making it an amicable number with two hundred eighty-four; and its factorization is
It is the sum of four consecutive primes (47 + 53 + 59 + 61).
220 is also
- A common voltage in the United States and Canada.
- A film format for medium format cameras.
- The designation of some spur routes of U.S. Interstate 20.
