13121210031200 has 72 divisors (see below), whose sum is σ = 32193119977200. Its totient is φ = 5222109657600.

The previous prime is 13121210031199. The next prime is 13121210031221. The reversal of 13121210031200 is 213001212131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41050631 + ... + 41369030.

It is an arithmetic number, because the mean of its divisors is an integer number (447126666350).

Almost surely, 2^{13121210031200} is an apocalyptic number.

13121210031200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13121210031200 is an abundant number, since it is smaller than the sum of its proper divisors (19071909946000).

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

13121210031200 is a wasteful number, since it uses less digits than its factorization.

13121210031200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82419880 (or 82419867 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13121210031200 its reverse (213001212131), we get a palindrome (13334211243331).

The spelling of 13121210031200 in words is "thirteen trillion, one hundred twenty-one billion, two hundred ten million, thirty-one thousand, two hundred".