12120321031013 has 16 divisors (see below), whose sum is σ = 13064931936000. Its totient is φ = 11177466478464.

The previous prime is 12120321030991. The next prime is 12120321031103. The reversal of 12120321031013 is 31013012302121.

It is a happy number.

It is not a de Polignac number, because 12120321031013 - 2²⁶ = 12120253922149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120321001013) 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, 143032745 + ... + 143117457.

It is an arithmetic number, because the mean of its divisors is an integer number (816558246000).

Almost surely, 2^{12120321031013} is an apocalyptic number.

12120321031013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12120321031013 is a deficient number, since it is larger than the sum of its proper divisors (944610904987).

12120321031013 is a wasteful number, since it uses less digits than its factorization.

12120321031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94948.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12120321031013 its reverse (31013012302121), we get a palindrome (43133333333134).

The spelling of 12120321031013 in words is "twelve trillion, one hundred twenty billion, three hundred twenty-one million, thirty-one thousand, thirteen".