12099921024 has 64 divisors (see below), whose sum is σ = 33248736000. Its totient is φ = 3894223872.

The previous prime is 12099921019. The next prime is 12099921049. The reversal of 12099921024 is 42012999021.

It is a tau number, because it is divible by the number of its divisors (64).

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, 532144 + ... + 554415.

It is an arithmetic number, because the mean of its divisors is an integer number (519511500).

Almost surely, 2^12099921024 is an apocalyptic number.

It is an amenable number.

12099921024 is an abundant number, since it is smaller than the sum of its proper divisors (21148814976).

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

12099921024 is a wasteful number, since it uses less digits than its factorization.

12099921024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086605 (or 1086593 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The spelling of 12099921024 in words is "twelve billion, ninety-nine million, nine hundred twenty-one thousand, twenty-four".