220865504131 has 2 divisors, whose sum is σ = 220865504132. Its totient is φ = 220865504130.

The previous prime is 220865504077. The next prime is 220865504137. The reversal of 220865504131 is 131405568022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220865504131 - 2²⁵ = 220831949699 is a prime.

It is a super-2 number, since 2×220865504131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220865504137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110432752065 + 110432752066.

It is an arithmetic number, because the mean of its divisors is an integer number (110432752066).

Almost surely, 2^220865504131 is an apocalyptic number.

220865504131 is a deficient number, since it is larger than the sum of its proper divisors (1).

220865504131 is an equidigital number, since it uses as much as digits as its factorization.

220865504131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 220865504131 in words is "two hundred twenty billion, eight hundred sixty-five million, five hundred four thousand, one hundred thirty-one".