220200020581 has 2 divisors, whose sum is σ = 220200020582. Its totient is φ = 220200020580.

The previous prime is 220200020533. The next prime is 220200020639. The reversal of 220200020581 is 185020002022.

220200020581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175167360900 + 45032659681 = 418530^2 + 212209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220200020581 is a prime.

It is a super-2 number, since 2×220200020581² (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 (220200020281) 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, 110100010290 + 110100010291.

It is an arithmetic number, because the mean of its divisors is an integer number (110100010291).

Almost surely, 2^220200020581 is an apocalyptic number.

It is an amenable number.

220200020581 is a deficient number, since it is larger than the sum of its proper divisors (1).

220200020581 is an equidigital number, since it uses as much as digits as its factorization.

220200020581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 22.

The spelling of 220200020581 in words is "two hundred twenty billion, two hundred million, twenty thousand, five hundred eighty-one".