12218560 has 28 divisors (see below), whose sum is σ = 29096208. Its totient is φ = 4887296.

The previous prime is 12218537. The next prime is 12218587. The reversal of 12218560 is 6581221.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18772 + ... + 19411.

Almost surely, 2^12218560 is an apocalyptic number.

12218560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12218560 is an abundant number, since it is smaller than the sum of its proper divisors (16877648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12218560 is an equidigital number, since it uses as much as digits as its factorization.

12218560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38200 (or 38190 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 12218560 is about 3495.5056858772. The cubic root of 12218560 is about 230.3244318789.

Adding to 12218560 its reverse (6581221), we get a palindrome (18799781).

The spelling of 12218560 in words is "twelve million, two hundred eighteen thousand, five hundred sixty".