13120321120 has 24 divisors (see below), whose sum is σ = 30996759024. Its totient is φ = 5248128384.

The previous prime is 13120321087. The next prime is 13120321127. The reversal of 13120321120 is 2112302131.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 13120321094 and 13120321103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120321127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41000844 + ... + 41001163.

It is an arithmetic number, because the mean of its divisors is an integer number (1291531626).

Almost surely, 2^13120321120 is an apocalyptic number.

13120321120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13120321120 is an abundant number, since it is smaller than the sum of its proper divisors (17876437904).

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

13120321120 is an equidigital number, since it uses as much as digits as its factorization.

13120321120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82002022 (or 82002014 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13120321120 its reverse (2112302131), we get a palindrome (15232623251).

The spelling of 13120321120 in words is "thirteen billion, one hundred twenty million, three hundred twenty-one thousand, one hundred twenty".