220865507131 has 2 divisors, whose sum is σ = 220865507132. Its totient is φ = 220865507130.

The previous prime is 220865507069. The next prime is 220865507143. The reversal of 220865507131 is 131705568022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220865507131 - 2⁷ = 220865507003 is a prime.

It is a super-2 number, since 2×220865507131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220865504131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110432753565 + 110432753566.

It is an arithmetic number, because the mean of its divisors is an integer number (110432753566).

Almost surely, 2^220865507131 is an apocalyptic number.

220865507131 is a deficient number, since it is larger than the sum of its proper divisors (1).

220865507131 is an equidigital number, since it uses as much as digits as its factorization.

220865507131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 220865507131 in words is "two hundred twenty billion, eight hundred sixty-five million, five hundred seven thousand, one hundred thirty-one".