13131113130021 has 32 divisors (see below), whose sum is σ = 18788738918400. Its totient is φ = 8127887189760.

The previous prime is 13131113130019. The next prime is 13131113130043. The reversal of 13131113130021 is 12003131113131.

13131113130021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13131113130021 - 2¹ = 13131113130019 is a prime.

It is a super-2 number, since 2×13131113130021² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13131113130021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131118130021) 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, 3326350 + ... + 6109568.

It is an arithmetic number, because the mean of its divisors is an integer number (587148091200).

Almost surely, 2^{13131113130021} is an apocalyptic number.

It is an amenable number.

13131113130021 is a deficient number, since it is larger than the sum of its proper divisors (5657625788379).

13131113130021 is a wasteful number, since it uses less digits than its factorization.

13131113130021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784489.

The product of its (nonzero) digits is 162, while the sum is 21.

Adding to 13131113130021 its reverse (12003131113131), we get a palindrome (25134244243152).

The spelling of 13131113130021 in words is "thirteen trillion, one hundred thirty-one billion, one hundred thirteen million, one hundred thirty thousand, twenty-one".