220220322173 has 2 divisors, whose sum is σ = 220220322174. Its totient is φ = 220220322172.

The previous prime is 220220322139. The next prime is 220220322181. The reversal of 220220322173 is 371223022022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181068972484 + 39151349689 = 425522^2 + 197867^2 .

It is a cyclic number.

It is not a de Polignac number, because 220220322173 - 2¹⁸ = 220220060029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220220322193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110161086 + 110110161087.

It is an arithmetic number, because the mean of its divisors is an integer number (110110161087).

Almost surely, 2^220220322173 is an apocalyptic number.

It is an amenable number.

220220322173 is a deficient number, since it is larger than the sum of its proper divisors (1).

220220322173 is an equidigital number, since it uses as much as digits as its factorization.

220220322173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

Adding to 220220322173 its reverse (371223022022), we get a palindrome (591443344195).

The spelling of 220220322173 in words is "two hundred twenty billion, two hundred twenty million, three hundred twenty-two thousand, one hundred seventy-three".