121516012 has 6 divisors (see below), whose sum is σ = 212653028. Its totient is φ = 60758004.

The previous prime is 121515997. The next prime is 121516027. The reversal of 121516012 is 210615121.

It is an interprime number because it is at equal distance from previous prime (121515997) and next prime (121516027).

It is a super-2 number, since 2×121516012² = 29532282344768288, 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, 15189498 + ... + 15189505.

Almost surely, 2^121516012 is an apocalyptic number.

It is an amenable number.

121516012 is a deficient number, since it is larger than the sum of its proper divisors (91137016).

121516012 is a wasteful number, since it uses less digits than its factorization.

121516012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30379007 (or 30379005 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 121516012 is about 11023.4301376659. The cubic root of 121516012 is about 495.3108437691.

The spelling of 121516012 in words is "one hundred twenty-one million, five hundred sixteen thousand, twelve".