12921108 has 24 divisors (see below), whose sum is σ = 30514848. Its totient is φ = 4254816.

The previous prime is 12921091. The next prime is 12921119. The reversal of 12921108 is 80112921.

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, 5491 + ... + 7482.

It is an arithmetic number, because the mean of its divisors is an integer number (1271452).

Almost surely, 2^12921108 is an apocalyptic number.

It is an amenable number.

12921108 is an abundant number, since it is smaller than the sum of its proper divisors (17593740).

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

12921108 is a wasteful number, since it uses less digits than its factorization.

12921108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13063 (or 13061 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 12921108 is about 3594.5942747409. The cubic root of 12921108 is about 234.6568584844.

The spelling of 12921108 in words is "twelve million, nine hundred twenty-one thousand, one hundred eight".