990199120012 has 12 divisors (see below), whose sum is σ = 1735090184016. Its totient is φ = 494459067440.

The previous prime is 990199119971. The next prime is 990199120051. The reversal of 990199120012 is 210021991099.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160119664 + ... + 160125847.

It is an arithmetic number, because the mean of its divisors is an integer number (144590848668).

Almost surely, 2^990199120012 is an apocalyptic number.

It is an amenable number.

990199120012 is a deficient number, since it is larger than the sum of its proper divisors (744891064004).

990199120012 is a wasteful number, since it uses less digits than its factorization.

990199120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320246288 (or 320246286 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 43.

The spelling of 990199120012 in words is "nine hundred ninety billion, one hundred ninety-nine million, one hundred twenty thousand, twelve".