1222460155817 has 2 divisors, whose sum is σ = 1222460155818. Its totient is φ = 1222460155816.

The previous prime is 1222460155729. The next prime is 1222460155921. The reversal of 1222460155817 is 7185510642221.

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., 1180734331456 + 41725824361 = 1086616^2 + 204269^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222460155817 - 2⁸ = 1222460155561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222460155117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611230077908 + 611230077909.

It is an arithmetic number, because the mean of its divisors is an integer number (611230077909).

Almost surely, 2^{1222460155817} is an apocalyptic number.

It is an amenable number.

1222460155817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222460155817 is an equidigital number, since it uses as much as digits as its factorization.

1222460155817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268800, while the sum is 44.

The spelling of 1222460155817 in words is "one trillion, two hundred twenty-two billion, four hundred sixty million, one hundred fifty-five thousand, eight hundred seventeen".