99991032230012 has 24 divisors (see below), whose sum is σ = 218162252138880. Its totient is φ = 38957545024560.

The previous prime is 99991032230003. The next prime is 99991032230087. The reversal of 99991032230012 is 21003223019999.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162323103962 + ... + 162323104577.

It is an arithmetic number, because the mean of its divisors is an integer number (9090093839120).

Almost surely, 2^{99991032230012} is an apocalyptic number.

It is an amenable number.

99991032230012 is an abundant number, since it is smaller than the sum of its proper divisors (118171219908868).

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

99991032230012 is a wasteful number, since it uses less digits than its factorization.

99991032230012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324646208561 (or 324646208559 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 50.

The spelling of 99991032230012 in words is "ninety-nine trillion, nine hundred ninety-one billion, thirty-two million, two hundred thirty thousand, twelve".