1222311239 has 2 divisors, whose sum is σ = 1222311240. Its totient is φ = 1222311238.

The previous prime is 1222311193. The next prime is 1222311263. The reversal of 1222311239 is 9321132221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222311239 - 2²⁴ = 1205534023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222311289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611155619 + 611155620.

It is an arithmetic number, because the mean of its divisors is an integer number (611155620).

Almost surely, 2^1222311239 is an apocalyptic number.

1222311239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222311239 is an equidigital number, since it uses as much as digits as its factorization.

1222311239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 1222311239 is about 34961.5680283365. The cubic root of 1222311239 is about 1069.2040661294.

The spelling of 1222311239 in words is "one billion, two hundred twenty-two million, three hundred eleven thousand, two hundred thirty-nine".