131212230041021 has 2 divisors, whose sum is σ = 131212230041022. Its totient is φ = 131212230041020.

The previous prime is 131212230040999. The next prime is 131212230041041. The reversal of 131212230041021 is 120140032212131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113988485018521 + 17223745022500 = 10676539^2 + 4150150^2 .

It is a cyclic number.

It is not a de Polignac number, because 131212230041021 - 2³⁸ = 130937352134077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131212230041041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65606115020510 + 65606115020511.

It is an arithmetic number, because the mean of its divisors is an integer number (65606115020511).

Almost surely, 2^{131212230041021} is an apocalyptic number.

It is an amenable number.

131212230041021 is a deficient number, since it is larger than the sum of its proper divisors (1).

131212230041021 is an equidigital number, since it uses as much as digits as its factorization.

131212230041021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 131212230041021 its reverse (120140032212131), we get a palindrome (251352262253152).

The spelling of 131212230041021 in words is "one hundred thirty-one trillion, two hundred twelve billion, two hundred thirty million, forty-one thousand, twenty-one".