220122017 has 2 divisors, whose sum is σ = 220122018. Its totient is φ = 220122016.

The previous prime is 220121999. The next prime is 220122043. The reversal of 220122017 is 710221022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205750336 + 14371681 = 14344^2 + 3791^2 .

It is a cyclic number.

It is not a de Polignac number, because 220122017 - 2⁶ = 220121953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220121986 and 220122004.

It is not a weakly prime, because it can be changed into another prime (220122047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110061008 + 110061009.

It is an arithmetic number, because the mean of its divisors is an integer number (110061009).

Almost surely, 2^220122017 is an apocalyptic number.

It is an amenable number.

220122017 is a deficient number, since it is larger than the sum of its proper divisors (1).

220122017 is an equidigital number, since it uses as much as digits as its factorization.

220122017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 220122017 is about 14836.5095962629. The cubic root of 220122017 is about 603.7926581344.

Adding to 220122017 its reverse (710221022), we get a palindrome (930343039).

The spelling of 220122017 in words is "two hundred twenty million, one hundred twenty-two thousand, seventeen".