131000042401021 has 2 divisors, whose sum is σ = 131000042401022. Its totient is φ = 131000042401020.

The previous prime is 131000042401001. The next prime is 131000042401037. The reversal of 131000042401021 is 120104240000131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103956662295396 + 27043380105625 = 10195914^2 + 5200325^2 .

It is a cyclic number.

It is not a de Polignac number, because 131000042401021 - 2²³ = 131000034012413 is a prime.

It is a super-2 number, since 2×131000042401021² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131000042401021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131000042401001) 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, 65500021200510 + 65500021200511.

It is an arithmetic number, because the mean of its divisors is an integer number (65500021200511).

Almost surely, 2^{131000042401021} is an apocalyptic number.

It is an amenable number.

131000042401021 is a deficient number, since it is larger than the sum of its proper divisors (1).

131000042401021 is an equidigital number, since it uses as much as digits as its factorization.

131000042401021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 131000042401021 its reverse (120104240000131), we get a palindrome (251104282401152).

The spelling of 131000042401021 in words is "one hundred thirty-one trillion, forty-two million, four hundred one thousand, twenty-one".