331265426222281 has 2 divisors, whose sum is σ = 331265426222282. Its totient is φ = 331265426222280.

The previous prime is 331265426222251. The next prime is 331265426222309. The reversal of 331265426222281 is 182222624562133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217187539696656 + 114077886525625 = 14737284^2 + 10680725^2 .

It is a cyclic number.

It is not a de Polignac number, because 331265426222281 - 2⁷ = 331265426222153 is a prime.

It is a super-2 number, since 2×331265426222281² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331265426222251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165632713111140 + 165632713111141.

It is an arithmetic number, because the mean of its divisors is an integer number (165632713111141).

Almost surely, 2^{331265426222281} is an apocalyptic number.

It is an amenable number.

331265426222281 is a deficient number, since it is larger than the sum of its proper divisors (1).

331265426222281 is an equidigital number, since it uses as much as digits as its factorization.

331265426222281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3317760, while the sum is 49.

The spelling of 331265426222281 in words is "three hundred thirty-one trillion, two hundred sixty-five billion, four hundred twenty-six million, two hundred twenty-two thousand, two hundred eighty-one".