9901010122120 has 64 divisors (see below), whose sum is σ = 23991527654640. Its totient is φ = 3655663334400.

The previous prime is 9901010122109. The next prime is 9901010122153. The reversal of 9901010122120 is 212210101099.

It can be written as a sum of positive squares in 8 ways, for example, as 7341899644836 + 2559110477284 = 2709594^2 + 1599722^2 .

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, 21855510 + ... + 22303930.

Almost surely, 2^{9901010122120} is an apocalyptic number.

It is an amenable number.

9901010122120 is an abundant number, since it is smaller than the sum of its proper divisors (14090517532520).

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

9901010122120 is a wasteful number, since it uses less digits than its factorization.

9901010122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490906 (or 490902 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 9901010122120 in words is "nine trillion, nine hundred one billion, ten million, one hundred twenty-two thousand, one hundred twenty".