13221020122120 has 64 divisors (see below), whose sum is σ = 29832781204800. Its totient is φ = 5273232034560.

The previous prime is 13221020122117. The next prime is 13221020122133. The reversal of 13221020122120 is 2122102012231.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19398735 + ... + 20068705.

It is an arithmetic number, because the mean of its divisors is an integer number (466137206325).

Almost surely, 2^{13221020122120} is an apocalyptic number.

13221020122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13221020122120 is an abundant number, since it is smaller than the sum of its proper divisors (16611761082680).

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

13221020122120 is a wasteful number, since it uses less digits than its factorization.

13221020122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671398 (or 671394 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 13221020122120 its reverse (2122102012231), we get a palindrome (15343122134351).

The spelling of 13221020122120 in words is "thirteen trillion, two hundred twenty-one billion, twenty million, one hundred twenty-two thousand, one hundred twenty".