220859281 has 2 divisors, whose sum is σ = 220859282. Its totient is φ = 220859280.

The previous prime is 220859267. The next prime is 220859293. The reversal of 220859281 is 182958022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144384256 + 76475025 = 12016^2 + 8745^2 .

It is a cyclic number.

It is not a de Polignac number, because 220859281 - 2⁹ = 220858769 is a prime.

It is a super-2 number, since 2×220859281² = 97557644007673922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220859281.

It is not a weakly prime, because it can be changed into another prime (220859081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110429640 + 110429641.

It is an arithmetic number, because the mean of its divisors is an integer number (110429641).

Almost surely, 2^220859281 is an apocalyptic number.

It is an amenable number.

220859281 is a deficient number, since it is larger than the sum of its proper divisors (1).

220859281 is an equidigital number, since it uses as much as digits as its factorization.

220859281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 220859281 is about 14861.3351015311. The cubic root of 220859281 is about 604.4660097106.

The spelling of 220859281 in words is "two hundred twenty million, eight hundred fifty-nine thousand, two hundred eighty-one".