13221120031101 has 32 divisors (see below), whose sum is σ = 19978787763840. Its totient is φ = 8638733980800.

The previous prime is 13221120031073. The next prime is 13221120031103. The reversal of 13221120031101 is 10113002112231.

13221120031101 is a `hidden beast` number, since 1 + 322 + 11 + 20 + 0 + 311 + 0 + 1 = 666.

It is not a de Polignac number, because 13221120031101 - 2⁵ = 13221120031069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221120031103) 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, 13820815 + ... + 14746428.

It is an arithmetic number, because the mean of its divisors is an integer number (624337117620).

Almost surely, 2^{13221120031101} is an apocalyptic number.

It is an amenable number.

13221120031101 is a deficient number, since it is larger than the sum of its proper divisors (6757667732739).

13221120031101 is a wasteful number, since it uses less digits than its factorization.

13221120031101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28567594 (or 28567588 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 13221120031101 its reverse (10113002112231), we get a palindrome (23334122143332).

The spelling of 13221120031101 in words is "thirteen trillion, two hundred twenty-one billion, one hundred twenty million, thirty-one thousand, one hundred one".