1122223456817 has 2 divisors, whose sum is σ = 1122223456818. Its totient is φ = 1122223456816.

The previous prime is 1122223456769. The next prime is 1122223456867. The reversal of 1122223456817 is 7186543222211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1046889126976 + 75334329841 = 1023176^2 + 274471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122223456817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1122223456867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561111728408 + 561111728409.

It is an arithmetic number, because the mean of its divisors is an integer number (561111728409).

Almost surely, 2^{1122223456817} is an apocalyptic number.

It is an amenable number.

1122223456817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122223456817 is an equidigital number, since it uses as much as digits as its factorization.

1122223456817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 44.

The spelling of 1122223456817 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-three million, four hundred fifty-six thousand, eight hundred seventeen".