13120344321020 has 96 divisors (see below), whose sum is σ = 29957417602560. Its totient is φ = 4808361738240.

The previous prime is 13120344321013. The next prime is 13120344321041. The reversal of 13120344321020 is 2012344302131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1249100 + ... + 5272659.

It is an arithmetic number, because the mean of its divisors is an integer number (312056433360).

Almost surely, 2^{13120344321020} is an apocalyptic number.

13120344321020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13120344321020 is an abundant number, since it is smaller than the sum of its proper divisors (16837073281540).

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

13120344321020 is a wasteful number, since it uses less digits than its factorization.

13120344321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6521943 (or 6521941 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 13120344321020 its reverse (2012344302131), we get a palindrome (15132688623151).

The spelling of 13120344321020 in words is "thirteen trillion, one hundred twenty billion, three hundred forty-four million, three hundred twenty-one thousand, twenty".