131121200013 has 4 divisors (see below), whose sum is σ = 174828266688. Its totient is φ = 87414133340.

The previous prime is 131121199973. The next prime is 131121200017. The reversal of 131121200013 is 310002121131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310002121131 = 3 ⋅103334040377.

It is a cyclic number.

It is not a de Polignac number, because 131121200013 - 2¹⁴ = 131121183629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131121199965 and 131121200001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131121200017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21853533333 + ... + 21853533338.

It is an arithmetic number, because the mean of its divisors is an integer number (43707066672).

Almost surely, 2^131121200013 is an apocalyptic number.

It is an amenable number.

131121200013 is a deficient number, since it is larger than the sum of its proper divisors (43707066675).

131121200013 is an equidigital number, since it uses as much as digits as its factorization.

131121200013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43707066674.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 131121200013 its reverse (310002121131), we get a palindrome (441123321144).

The spelling of 131121200013 in words is "one hundred thirty-one billion, one hundred twenty-one million, two hundred thousand, thirteen".