220502110522021 has 2 divisors, whose sum is σ = 220502110522022. Its totient is φ = 220502110522020.

The previous prime is 220502110521977. The next prime is 220502110522037. The reversal of 220502110522021 is 120225011205022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111504856491396 + 108997254030625 = 10559586^2 + 10440175^2 .

It is a cyclic number.

It is not a de Polignac number, because 220502110522021 - 2⁷ = 220502110521893 is a prime.

It is a super-2 number, since 2×220502110522021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220502110522051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110251055261010 + 110251055261011.

It is an arithmetic number, because the mean of its divisors is an integer number (110251055261011).

Almost surely, 2^{220502110522021} is an apocalyptic number.

It is an amenable number.

220502110522021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220502110522021 is an equidigital number, since it uses as much as digits as its factorization.

220502110522021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 220502110522021 its reverse (120225011205022), we get a palindrome (340727121727043).

The spelling of 220502110522021 in words is "two hundred twenty trillion, five hundred two billion, one hundred ten million, five hundred twenty-two thousand, twenty-one".