13221100524 has 24 divisors (see below), whose sum is σ = 32472879040. Its totient is φ = 4175084304.

The previous prime is 13221100523. The next prime is 13221100577. The reversal of 13221100524 is 42500112231.

It is a self number, because there is not a number n which added to its sum of digits gives 13221100524.

It is not an unprimeable number, because it can be changed into a prime (13221100523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28993414 + ... + 28993869.

Almost surely, 2^13221100524 is an apocalyptic number.

It is an amenable number.

13221100524 is an abundant number, since it is smaller than the sum of its proper divisors (19251778516).

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

13221100524 is a wasteful number, since it uses less digits than its factorization.

13221100524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57987309 (or 57987307 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 13221100524 its reverse (42500112231), we get a palindrome (55721212755).

The spelling of 13221100524 in words is "thirteen billion, two hundred twenty-one million, one hundred thousand, five hundred twenty-four".