13213213312 has 64 divisors (see below), whose sum is σ = 28828749600. Its totient is φ = 5994998784.

The previous prime is 13213213267. The next prime is 13213213327. The reversal of 13213213312 is 21331231231.

It is a tau number, because it is divible by the number of its divisors (64).

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, 30883 + ... + 165469.

Almost surely, 2^13213213312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13213213312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14414374800).

13213213312 is an abundant number, since it is smaller than the sum of its proper divisors (15615536288).

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

13213213312 is a wasteful number, since it uses less digits than its factorization.

13213213312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134673 (or 134661 counting only the distinct ones).

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

Adding to 13213213312 its reverse (21331231231), we get a palindrome (34544444543).

The spelling of 13213213312 in words is "thirteen billion, two hundred thirteen million, two hundred thirteen thousand, three hundred twelve".