1222839173 has 2 divisors, whose sum is σ = 1222839174. Its totient is φ = 1222839172.

The previous prime is 1222839169. The next prime is 1222839193. The reversal of 1222839173 is 3719382221.

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., 1198405924 + 24433249 = 34618^2 + 4943^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222839173 - 2² = 1222839169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222839193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611419586 + 611419587.

It is an arithmetic number, because the mean of its divisors is an integer number (611419587).

Almost surely, 2^1222839173 is an apocalyptic number.

It is an amenable number.

1222839173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222839173 is an equidigital number, since it uses as much as digits as its factorization.

1222839173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 1222839173 is about 34969.1174180876. The cubic root of 1222839173 is about 1069.3579789010.

The spelling of 1222839173 in words is "one billion, two hundred twenty-two million, eight hundred thirty-nine thousand, one hundred seventy-three".