1212112013113 has 4 divisors (see below), whose sum is σ = 1214128839028. Its totient is φ = 1210095187200.

The previous prime is 1212112013093. The next prime is 1212112013171. The reversal of 1212112013113 is 3113102112121.

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 1058207230864 + 153904782249 = 1028692^2 + 392307^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212112013113 - 2³⁷ = 1074673059641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212112013183) 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, 1008412056 + ... + 1008413257.

It is an arithmetic number, because the mean of its divisors is an integer number (303532209757).

Almost surely, 2^{1212112013113} is an apocalyptic number.

It is an amenable number.

1212112013113 is a deficient number, since it is larger than the sum of its proper divisors (2016825915).

1212112013113 is an equidigital number, since it uses as much as digits as its factorization.

1212112013113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016825914.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1212112013113 its reverse (3113102112121), we get a palindrome (4325214125234).

The spelling of 1212112013113 in words is "one trillion, two hundred twelve billion, one hundred twelve million, thirteen thousand, one hundred thirteen".