13213112120 has 64 divisors (see below), whose sum is σ = 32042636640. Its totient is φ = 4874688000.

The previous prime is 13213112083. The next prime is 13213112123. The reversal of 13213112120 is 2121131231.

It is a super-4 number, since 4×13213112120⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213112123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 666755 + ... + 686285.

Almost surely, 2^13213112120 is an apocalyptic number.

13213112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13213112120 is an abundant number, since it is smaller than the sum of its proper divisors (18829524520).

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

13213112120 is a wasteful number, since it uses less digits than its factorization.

13213112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20856 (or 20852 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13213112120 its reverse (2121131231), we get a palindrome (15334243351).

The spelling of 13213112120 in words is "thirteen billion, two hundred thirteen million, one hundred twelve thousand, one hundred twenty".