131062508221 has 2 divisors, whose sum is σ = 131062508222. Its totient is φ = 131062508220.

The previous prime is 131062508207. The next prime is 131062508279. The reversal of 131062508221 is 122805260131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77458682596 + 53603825625 = 278314^2 + 231525^2 .

It is an emirp because it is prime and its reverse (122805260131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131062508221 - 2²⁹ = 130525637309 is a prime.

It is a super-2 number, since 2×131062508221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131062508021) 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 as a sum of consecutive naturals, namely, 65531254110 + 65531254111.

It is an arithmetic number, because the mean of its divisors is an integer number (65531254111).

Almost surely, 2^131062508221 is an apocalyptic number.

It is an amenable number.

131062508221 is a deficient number, since it is larger than the sum of its proper divisors (1).

131062508221 is an equidigital number, since it uses as much as digits as its factorization.

131062508221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

Adding to 131062508221 its reverse (122805260131), we get a palindrome (253867768352).

The spelling of 131062508221 in words is "one hundred thirty-one billion, sixty-two million, five hundred eight thousand, two hundred twenty-one".