1222202223217 has 2 divisors, whose sum is σ = 1222202223218. Its totient is φ = 1222202223216.

The previous prime is 1222202223173. The next prime is 1222202223241. The reversal of 1222202223217 is 7123222022221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 931757756176 + 290444467041 = 965276^2 + 538929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222202223217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222202223247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611101111608 + 611101111609.

It is an arithmetic number, because the mean of its divisors is an integer number (611101111609).

Almost surely, 2^{1222202223217} is an apocalyptic number.

It is an amenable number.

1222202223217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222202223217 is an equidigital number, since it uses as much as digits as its factorization.

1222202223217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 1222202223217 its reverse (7123222022221), we get a palindrome (8345424245438).

The spelling of 1222202223217 in words is "one trillion, two hundred twenty-two billion, two hundred two million, two hundred twenty-three thousand, two hundred seventeen".