13056120113221 has 32 divisors (see below), whose sum is σ = 14273662427136. Its totient is φ = 11907349872000.

The previous prime is 13056120113189. The next prime is 13056120113227. The reversal of 13056120113221 is 12231102165031.

It is not a de Polignac number, because 13056120113221 - 2⁵ = 13056120113189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13056120113221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13056120113227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30412656 + ... + 30838966.

It is an arithmetic number, because the mean of its divisors is an integer number (446051950848).

Almost surely, 2^{13056120113221} is an apocalyptic number.

It is an amenable number.

13056120113221 is a deficient number, since it is larger than the sum of its proper divisors (1217542313915).

13056120113221 is a wasteful number, since it uses less digits than its factorization.

13056120113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427113.

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 13056120113221 its reverse (12231102165031), we get a palindrome (25287222278252).

The spelling of 13056120113221 in words is "thirteen trillion, fifty-six billion, one hundred twenty million, one hundred thirteen thousand, two hundred twenty-one".