131141123210021 has 4 divisors (see below), whose sum is σ = 133931359874112. Its totient is φ = 128350886545932.

The previous prime is 131141123210017. The next prime is 131141123210039. The reversal of 131141123210021 is 120012321141131.

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.

It is a cyclic number.

It is not a de Polignac number, because 131141123210021 - 2² = 131141123210017 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 (131141123210081) 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, 1395118331975 + ... + 1395118332068.

It is an arithmetic number, because the mean of its divisors is an integer number (33482839968528).

Almost surely, 2^{131141123210021} is an apocalyptic number.

It is an amenable number.

131141123210021 is a deficient number, since it is larger than the sum of its proper divisors (2790236664091).

131141123210021 is an equidigital number, since it uses as much as digits as its factorization.

131141123210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790236664090.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 131141123210021 its reverse (120012321141131), we get a palindrome (251153444351152).

The spelling of 131141123210021 in words is "one hundred thirty-one trillion, one hundred forty-one billion, one hundred twenty-three million, two hundred ten thousand, twenty-one".