990099120001 has 16 divisors (see below), whose sum is σ = 1002954700800. Its totient is φ = 977325713280.

The previous prime is 990099119993. The next prime is 990099120011. The reversal of 990099120001 is 100021990099.

It is a cyclic number.

It is not a de Polignac number, because 990099120001 - 2³ = 990099119993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990099120011) 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, 156732495 + ... + 156738811.

It is an arithmetic number, because the mean of its divisors is an integer number (62684668800).

Almost surely, 2^990099120001 is an apocalyptic number.

It is an amenable number.

990099120001 is a deficient number, since it is larger than the sum of its proper divisors (12855580799).

990099120001 is a wasteful number, since it uses less digits than its factorization.

990099120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12504.

The product of its (nonzero) digits is 13122, while the sum is 40.

The spelling of 990099120001 in words is "nine hundred ninety billion, ninety-nine million, one hundred twenty thousand, one".