121564012 has 6 divisors (see below), whose sum is σ = 212737028. Its totient is φ = 60782004.

The previous prime is 121564007. The next prime is 121564021. The reversal of 121564012 is 210465121.

It is a super-2 number, since 2×121564012² = 29555618027072288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15195498 + ... + 15195505.

Almost surely, 2^121564012 is an apocalyptic number.

It is an amenable number.

121564012 is a deficient number, since it is larger than the sum of its proper divisors (91173016).

121564012 is a wasteful number, since it uses less digits than its factorization.

121564012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30391007 (or 30391005 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 121564012 is about 11025.6071034660. The cubic root of 121564012 is about 495.3760527084.

The spelling of 121564012 in words is "one hundred twenty-one million, five hundred sixty-four thousand, twelve".