123222217 has 2 divisors, whose sum is σ = 123222218. Its totient is φ = 123222216.

The previous prime is 123222199. The next prime is 123222223. The reversal of 123222217 is 712222321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70963776 + 52258441 = 8424^2 + 7229^2 .

It is a cyclic number.

It is not a de Polignac number, because 123222217 - 2⁷ = 123222089 is a prime.

It is not a weakly prime, because it can be changed into another prime (123222287) 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, 61611108 + 61611109.

It is an arithmetic number, because the mean of its divisors is an integer number (61611109).

Almost surely, 2^123222217 is an apocalyptic number.

It is an amenable number.

123222217 is a deficient number, since it is larger than the sum of its proper divisors (1).

123222217 is an equidigital number, since it uses as much as digits as its factorization.

123222217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 22.

The square root of 123222217 is about 11100.5503016742. The cubic root of 123222217 is about 497.6182956491.

Adding to 123222217 its reverse (712222321), we get a palindrome (835444538).

The spelling of 123222217 in words is "one hundred twenty-three million, two hundred twenty-two thousand, two hundred seventeen".