1222512331 has 2 divisors, whose sum is σ = 1222512332. Its totient is φ = 1222512330.

The previous prime is 1222512329. The next prime is 1222512337. The reversal of 1222512331 is 1332152221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222512331 - 2¹ = 1222512329 is a prime.

It is a super-2 number, since 2×1222512331² = 2989072798894107122, which contains 22 as substring.

Together with 1222512329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1222512337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611256165 + 611256166.

It is an arithmetic number, because the mean of its divisors is an integer number (611256166).

Almost surely, 2^1222512331 is an apocalyptic number.

1222512331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222512331 is an equidigital number, since it uses as much as digits as its factorization.

1222512331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 1222512331 is about 34964.4438108202. The cubic root of 1222512331 is about 1069.2626972940.

Adding to 1222512331 its reverse (1332152221), we get a palindrome (2554664552).

The spelling of 1222512331 in words is "one billion, two hundred twenty-two million, five hundred twelve thousand, three hundred thirty-one".