12099401979000 has 192 divisors, whose sum is σ = 43913421920160. Its totient is φ = 2765577561600.

The previous prime is 12099401978971. The next prime is 12099401979001. The reversal of 12099401979000 is 97910499021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12099401979001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41007429 + ... + 41301428.

Almost surely, 2^{12099401979000} is an apocalyptic number.

12099401979000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12099401979000 is an abundant number, since it is smaller than the sum of its proper divisors (31814019941160).

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

12099401979000 is a wasteful number, since it uses less digits than its factorization.

12099401979000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82308895 (or 82308874 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 51.

The spelling of 12099401979000 in words is "twelve trillion, ninety-nine billion, four hundred one million, nine hundred seventy-nine thousand".