12001012199980 has 12 divisors (see below), whose sum is σ = 25202125620000. Its totient is φ = 4800404879984.

The previous prime is 12001012199963. The next prime is 12001012199983. The reversal of 12001012199980 is 8999121010021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12001012199983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300025304980 + ... + 300025305019.

It is an arithmetic number, because the mean of its divisors is an integer number (2100177135000).

Almost surely, 2^{12001012199980} is an apocalyptic number.

12001012199980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001012199980 is an abundant number, since it is smaller than the sum of its proper divisors (13201113420020).

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

12001012199980 is a wasteful number, since it uses less digits than its factorization.

12001012199980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600050610008 (or 600050610006 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 43.

The spelling of 12001012199980 in words is "twelve trillion, one billion, twelve million, one hundred ninety-nine thousand, nine hundred eighty".