220022000221 has 2 divisors, whose sum is σ = 220022000222. Its totient is φ = 220022000220.

The previous prime is 220022000173. The next prime is 220022000281. The reversal of 220022000221 is 122000220022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219599080996 + 422919225 = 468614^2 + 20565^2 .

It is a cyclic number.

It is not a de Polignac number, because 220022000221 - 2²³ = 220013611613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220022000281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110011000110 + 110011000111.

It is an arithmetic number, because the mean of its divisors is an integer number (110011000111).

Almost surely, 2^220022000221 is an apocalyptic number.

It is an amenable number.

220022000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

220022000221 is an equidigital number, since it uses as much as digits as its factorization.

220022000221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 220022000221 its reverse (122000220022), we get a palindrome (342022220243).

The spelling of 220022000221 in words is "two hundred twenty billion, twenty-two million, two hundred twenty-one", and thus it is an aban number.