131055524221 has 2 divisors, whose sum is σ = 131055524222. Its totient is φ = 131055524220.

The previous prime is 131055524209. The next prime is 131055524251. The reversal of 131055524221 is 122425550131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99152563225 + 31902960996 = 314885^2 + 178614^2 .

It is a cyclic number.

It is not a de Polignac number, because 131055524221 - 2²¹ = 131053427069 is a prime.

It is a super-2 number, since 2×131055524221² (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 (131055524251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65527762110 + 65527762111.

It is an arithmetic number, because the mean of its divisors is an integer number (65527762111).

Almost surely, 2^131055524221 is an apocalyptic number.

It is an amenable number.

131055524221 is a deficient number, since it is larger than the sum of its proper divisors (1).

131055524221 is an equidigital number, since it uses as much as digits as its factorization.

131055524221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 131055524221 in words is "one hundred thirty-one billion, fifty-five million, five hundred twenty-four thousand, two hundred twenty-one".