1222438313 has 2 divisors, whose sum is σ = 1222438314. Its totient is φ = 1222438312.

The previous prime is 1222438303. The next prime is 1222438331. The reversal of 1222438313 is 3138342221.

Together with next prime (1222438331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 848673424 + 373764889 = 29132^2 + 19333^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222438313 - 2⁴ = 1222438297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1222438303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611219156 + 611219157.

It is an arithmetic number, because the mean of its divisors is an integer number (611219157).

Almost surely, 2^1222438313 is an apocalyptic number.

It is an amenable number.

1222438313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222438313 is an equidigital number, since it uses as much as digits as its factorization.

1222438313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 1222438313 is about 34963.3853195025. The cubic root of 1222438313 is about 1069.2411170662.

The spelling of 1222438313 in words is "one billion, two hundred twenty-two million, four hundred thirty-eight thousand, three hundred thirteen".