13221002312 has 32 divisors (see below), whose sum is σ = 28421270400. Its totient is φ = 5648033664.

The previous prime is 13221002297. The next prime is 13221002317. The reversal of 13221002312 is 21320012231.

It is not an unprimeable number, because it can be changed into a prime (13221002317) 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, 359612 + ... + 394667.

It is an arithmetic number, because the mean of its divisors is an integer number (888164700).

Almost surely, 2^13221002312 is an apocalyptic number.

It is an amenable number.

13221002312 is an abundant number, since it is smaller than the sum of its proper divisors (15200268088).

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

13221002312 is a wasteful number, since it uses less digits than its factorization.

13221002312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754605 (or 754601 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13221002312 its reverse (21320012231), we get a palindrome (34541014543).

The spelling of 13221002312 in words is "thirteen billion, two hundred twenty-one million, two thousand, three hundred twelve".