13112032055521 has 24 divisors (see below), whose sum is σ = 15417657204840. Its totient is φ = 11117724532992.

The previous prime is 13112032055489. The next prime is 13112032055527. The reversal of 13112032055521 is 12555023021131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 369730883025 + 12742301172496 = 608055^2 + 3569636^2 .

It is not a de Polignac number, because 13112032055521 - 2⁵ = 13112032055489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13112032055527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1305951 + ... + 5284843.

It is an arithmetic number, because the mean of its divisors is an integer number (642402383535).

Almost surely, 2^{13112032055521} is an apocalyptic number.

It is an amenable number.

13112032055521 is a deficient number, since it is larger than the sum of its proper divisors (2305625149319).

13112032055521 is a wasteful number, since it uses less digits than its factorization.

13112032055521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3979633 (or 3979626 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 13112032055521 its reverse (12555023021131), we get a palindrome (25667055076652).

The spelling of 13112032055521 in words is "thirteen trillion, one hundred twelve billion, thirty-two million, fifty-five thousand, five hundred twenty-one".