121600715500 has 48 divisors (see below), whose sum is σ = 289719245088. Its totient is φ = 44218440000.

The previous prime is 121600715491. The next prime is 121600715527. The reversal of 121600715500 is 5517006121.

It is a super-2 number, since 2×121600715500² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11049111 + ... + 11060110.

It is an arithmetic number, because the mean of its divisors is an integer number (6035817606).

Almost surely, 2^121600715500 is an apocalyptic number.

121600715500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121600715500 is an abundant number, since it is smaller than the sum of its proper divisors (168118529588).

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

121600715500 is a wasteful number, since it uses less digits than its factorization.

121600715500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22109251 (or 22109239 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 28.

The spelling of 121600715500 in words is "one hundred twenty-one billion, six hundred million, seven hundred fifteen thousand, five hundred".