12101311012013 has 4 divisors (see below), whose sum is σ = 12226066795740. Its totient is φ = 11976555228288.

The previous prime is 12101311012003. The next prime is 12101311012123. The reversal of 12101311012013 is 31021011310121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2847042033124 + 9254268978889 = 1687318^2 + 3042083^2 .

It is a cyclic number.

It is not a de Polignac number, because 12101311012013 - 2⁴ = 12101311011997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12101311011982 and 12101311012000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101311012003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62377891718 + ... + 62377891911.

It is an arithmetic number, because the mean of its divisors is an integer number (3056516698935).

Almost surely, 2^{12101311012013} is an apocalyptic number.

It is an amenable number.

12101311012013 is a deficient number, since it is larger than the sum of its proper divisors (124755783727).

12101311012013 is an equidigital number, since it uses as much as digits as its factorization.

12101311012013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124755783726.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 12101311012013 its reverse (31021011310121), we get a palindrome (43122322322134).

The spelling of 12101311012013 in words is "twelve trillion, one hundred one billion, three hundred eleven million, twelve thousand, thirteen".