13221201324 has 12 divisors (see below), whose sum is σ = 30849469784. Its totient is φ = 4407067104.

The previous prime is 13221201299. The next prime is 13221201353. The reversal of 13221201324 is 42310212231.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 13221201324.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550883377 + ... + 550883400.

Almost surely, 2^13221201324 is an apocalyptic number.

It is an amenable number.

13221201324 is an abundant number, since it is smaller than the sum of its proper divisors (17628268460).

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

13221201324 is a wasteful number, since it uses less digits than its factorization.

13221201324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101766784 (or 1101766782 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 13221201324 its reverse (42310212231), we get a palindrome (55531413555).

The spelling of 13221201324 in words is "thirteen billion, two hundred twenty-one million, two hundred one thousand, three hundred twenty-four".