12921168 has 40 divisors (see below), whose sum is σ = 35949088. Its totient is φ = 3975552.

The previous prime is 12921163. The next prime is 12921179. The reversal of 12921168 is 86112921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12921163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9730 + ... + 10977.

Almost surely, 2^12921168 is an apocalyptic number.

It is an amenable number.

12921168 is an abundant number, since it is smaller than the sum of its proper divisors (23027920).

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

12921168 is a wasteful number, since it uses less digits than its factorization.

12921168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20731 (or 20725 counting only the distinct ones).

The product of its digits is 1728, while the sum is 30.

The square root of 12921168 is about 3594.6026205966. The cubic root of 12921168 is about 234.6572216986.

The spelling of 12921168 in words is "twelve million, nine hundred twenty-one thousand, one hundred sixty-eight".