12218680 has 32 divisors (see below), whose sum is σ = 27624240. Its totient is φ = 4864000.

The previous prime is 12218663. The next prime is 12218707. The reversal of 12218680 is 8681221.

12218680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12218680² = 298592281884800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9432 + ... + 10648.

Almost surely, 2^12218680 is an apocalyptic number.

12218680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12218680 is an abundant number, since it is smaller than the sum of its proper divisors (15405560).

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

12218680 is a wasteful number, since it uses less digits than its factorization.

12218680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479 (or 1475 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 12218680 is about 3495.5228507335. The cubic root of 12218680 is about 230.3251858914.

The spelling of 12218680 in words is "twelve million, two hundred eighteen thousand, six hundred eighty".