13121132120 has 32 divisors (see below), whose sum is σ = 29896257600. Its totient is φ = 5182015488.

The previous prime is 13121132113. The next prime is 13121132263. The reversal of 13121132120 is 2123112131.

It is a super-2 number, since 2×13121132120² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 2072969 + ... + 2079288.

It is an arithmetic number, because the mean of its divisors is an integer number (934258050).

Almost surely, 2^13121132120 is an apocalyptic number.

13121132120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13121132120 is an abundant number, since it is smaller than the sum of its proper divisors (16775125480).

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

13121132120 is a wasteful number, since it uses less digits than its factorization.

13121132120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152347 (or 4152343 counting only the distinct ones).

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

Adding to 13121132120 its reverse (2123112131), we get a palindrome (15244244251).

The spelling of 13121132120 in words is "thirteen billion, one hundred twenty-one million, one hundred thirty-two thousand, one hundred twenty".