220253021 has 2 divisors, whose sum is σ = 220253022. Its totient is φ = 220253020.

The previous prime is 220252993. The next prime is 220253029. The reversal of 220253021 is 120352022.

220253021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198528100 + 21724921 = 14090^2 + 4661^2 .

It is a cyclic number.

It is not a de Polignac number, because 220253021 - 2¹⁸ = 219990877 is a prime.

It is a super-2 number, since 2×220253021² = 97022786519252882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220253029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110126510 + 110126511.

It is an arithmetic number, because the mean of its divisors is an integer number (110126511).

Almost surely, 2^220253021 is an apocalyptic number.

It is an amenable number.

220253021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220253021 is an equidigital number, since it uses as much as digits as its factorization.

220253021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 220253021 is about 14840.9238593829. The cubic root of 220253021 is about 603.9124153004.

Subtracting from 220253021 its reverse (120352022), we obtain a palindrome (99900999).

The spelling of 220253021 in words is "two hundred twenty million, two hundred fifty-three thousand, twenty-one".