13120323012 has 36 divisors (see below), whose sum is σ = 33170273136. Its totient is φ = 4372780080.

The previous prime is 13120323001. The next prime is 13120323059. The reversal of 13120323012 is 21032302131.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253183 + ... + 300569.

It is an arithmetic number, because the mean of its divisors is an integer number (921396476).

Almost surely, 2^13120323012 is an apocalyptic number.

13120323012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13120323012 is an abundant number, since it is smaller than the sum of its proper divisors (20049950124).

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

13120323012 is a wasteful number, since it uses less digits than its factorization.

13120323012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55088 (or 55083 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13120323012 its reverse (21032302131), we get a palindrome (34152625143).

The spelling of 13120323012 in words is "thirteen billion, one hundred twenty million, three hundred twenty-three thousand, twelve".