99110012020121 has 16 divisors (see below), whose sum is σ = 99481718419200. Its totient is φ = 98738944617600.

The previous prime is 99110012020093. The next prime is 99110012020211. The reversal of 99110012020121 is 12102021001199.

It is a cyclic number.

It is not a de Polignac number, because 99110012020121 - 2²² = 99110007825817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99110012026121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1336415840 + ... + 1336489998.

It is an arithmetic number, because the mean of its divisors is an integer number (6217607401200).

Almost surely, 2^{99110012020121} is an apocalyptic number.

It is an amenable number.

99110012020121 is a deficient number, since it is larger than the sum of its proper divisors (371706399079).

99110012020121 is a wasteful number, since it uses less digits than its factorization.

99110012020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78400.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 99110012020121 in words is "ninety-nine trillion, one hundred ten billion, twelve million, twenty thousand, one hundred twenty-one".