121865012 has 24 divisors (see below), whose sum is σ = 225183840. Its totient is φ = 57546720.

The previous prime is 121864987. The next prime is 121865041. The reversal of 121865012 is 210568121.

It is a super-2 number, since 2×121865012² = 29702162299520288, 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, 24062 + ... + 28682.

It is an arithmetic number, because the mean of its divisors is an integer number (9382660).

Almost surely, 2^121865012 is an apocalyptic number.

It is an amenable number.

121865012 is a deficient number, since it is larger than the sum of its proper divisors (103318828).

121865012 is a wasteful number, since it uses less digits than its factorization.

121865012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4991 (or 4989 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 121865012 is about 11039.2487063206. The cubic root of 121865012 is about 495.7845762821.

The spelling of 121865012 in words is "one hundred twenty-one million, eight hundred sixty-five thousand, twelve".