1222405313 has 2 divisors, whose sum is σ = 1222405314. Its totient is φ = 1222405312.

The previous prime is 1222405309. The next prime is 1222405351. The reversal of 1222405313 is 3135042221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 612463504 + 609941809 = 24748^2 + 24697^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222405313 - 2² = 1222405309 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222405813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611202656 + 611202657.

It is an arithmetic number, because the mean of its divisors is an integer number (611202657).

Almost surely, 2^1222405313 is an apocalyptic number.

It is an amenable number.

1222405313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222405313 is an equidigital number, since it uses as much as digits as its factorization.

1222405313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1222405313 is about 34962.9133940523. The cubic root of 1222405313 is about 1069.2314955107.

Adding to 1222405313 its reverse (3135042221), we get a palindrome (4357447534).

The spelling of 1222405313 in words is "one billion, two hundred twenty-two million, four hundred five thousand, three hundred thirteen".