99911021000012 has 96 divisors (see below), whose sum is σ = 182747580309504. Its totient is φ = 47756752243200.

The previous prime is 99911020999957. The next prime is 99911021000033. The reversal of 99911021000012 is 21000012011999.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8182044587 + ... + 8182056797.

It is an arithmetic number, because the mean of its divisors is an integer number (1903620628224).

Almost surely, 2^{99911021000012} is an apocalyptic number.

It is an amenable number.

99911021000012 is a deficient number, since it is larger than the sum of its proper divisors (82836559309492).

99911021000012 is a wasteful number, since it uses less digits than its factorization.

99911021000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17199 (or 17197 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 35.

The spelling of 99911021000012 in words is "ninety-nine trillion, nine hundred eleven billion, twenty-one million, twelve", and thus it is an aban number.