12001001978192 has 80 divisors (see below), whose sum is σ = 25097924046720. Its totient is φ = 5544308030976.

The previous prime is 12001001978183. The next prime is 12001001978213. The reversal of 12001001978192 is 29187910010021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1277843 + ... + 5063090.

It is an arithmetic number, because the mean of its divisors is an integer number (313724050584).

Almost surely, 2^{12001001978192} is an apocalyptic number.

It is an amenable number.

12001001978192 is an abundant number, since it is smaller than the sum of its proper divisors (13096922068528).

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

12001001978192 is a wasteful number, since it uses less digits than its factorization.

12001001978192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6341140 (or 6341134 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 41.

The spelling of 12001001978192 in words is "twelve trillion, one billion, one million, nine hundred seventy-eight thousand, one hundred ninety-two".