13221233312 has 36 divisors (see below), whose sum is σ = 30278988810. Its totient is φ = 5666242176.

The previous prime is 13221233303. The next prime is 13221233321. The reversal of 13221233312 is 21333212231.

It is an interprime number because it is at equal distance from previous prime (13221233303) and next prime (13221233321).

It can be written as a sum of positive squares in only one way, i.e., 10200192016 + 3021041296 = 100996^2 + 54964^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4214387 + ... + 4217522.

Almost surely, 2^13221233312 is an apocalyptic number.

It is an amenable number.

13221233312 is an abundant number, since it is smaller than the sum of its proper divisors (17057755498).

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

13221233312 is an equidigital number, since it uses as much as digits as its factorization.

13221233312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8431933 (or 8431918 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

Adding to 13221233312 its reverse (21333212231), we get a palindrome (34554445543).

The spelling of 13221233312 in words is "thirteen billion, two hundred twenty-one million, two hundred thirty-three thousand, three hundred twelve".