222312122173 has 2 divisors, whose sum is σ = 222312122174. Its totient is φ = 222312122172.

The previous prime is 222312122141. The next prime is 222312122239. The reversal of 222312122173 is 371221213222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211707653689 + 10604468484 = 460117^2 + 102978^2 .

It is a cyclic number.

It is not a de Polignac number, because 222312122173 - 2⁵ = 222312122141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222312128173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111156061086 + 111156061087.

It is an arithmetic number, because the mean of its divisors is an integer number (111156061087).

Almost surely, 2^222312122173 is an apocalyptic number.

It is an amenable number.

222312122173 is a deficient number, since it is larger than the sum of its proper divisors (1).

222312122173 is an equidigital number, since it uses as much as digits as its factorization.

222312122173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

Adding to 222312122173 its reverse (371221213222), we get a palindrome (593533335395).

The spelling of 222312122173 in words is "two hundred twenty-two billion, three hundred twelve million, one hundred twenty-two thousand, one hundred seventy-three".