131441216021 has 2 divisors, whose sum is σ = 131441216022. Its totient is φ = 131441216020.

The previous prime is 131441215993. The next prime is 131441216077. The reversal of 131441216021 is 120612144131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76126879921 + 55314336100 = 275911^2 + 235190^2 .

It is a cyclic number.

It is not a de Polignac number, because 131441216021 - 2²² = 131437021717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131441216321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65720608010 + 65720608011.

It is an arithmetic number, because the mean of its divisors is an integer number (65720608011).

Almost surely, 2^131441216021 is an apocalyptic number.

It is an amenable number.

131441216021 is a deficient number, since it is larger than the sum of its proper divisors (1).

131441216021 is an equidigital number, since it uses as much as digits as its factorization.

131441216021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 131441216021 in words is "one hundred thirty-one billion, four hundred forty-one million, two hundred sixteen thousand, twenty-one".