13321331212 has 24 divisors (see below), whose sum is σ = 26645107104. Its totient is φ = 5708618112.

The previous prime is 13321331209. The next prime is 13321331227. The reversal of 13321331212 is 21213312331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 577158 + ... + 599794.

It is an arithmetic number, because the mean of its divisors is an integer number (1110212796).

Almost surely, 2^13321331212 is an apocalyptic number.

It is an amenable number.

13321331212 is an abundant number, since it is smaller than the sum of its proper divisors (13323775892).

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

13321331212 is a wasteful number, since it uses less digits than its factorization.

13321331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43665 (or 43663 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

Adding to 13321331212 its reverse (21213312331), we get a palindrome (34534643543).

The spelling of 13321331212 in words is "thirteen billion, three hundred twenty-one million, three hundred thirty-one thousand, two hundred twelve".