1222323311 has 16 divisors (see below), whose sum is σ = 1357406208. Its totient is φ = 1091412000.

The previous prime is 1222323301. The next prime is 1222323317. The reversal of 1222323311 is 1133232221.

It is a cyclic number.

It is not a de Polignac number, because 1222323311 - 2¹⁴ = 1222306927 is a prime.

It is a super-2 number, since 2×1222323311² = 2988148553228005442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222323317) 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 in 15 ways as a sum of consecutive naturals, for example, 136766 + ... + 145428.

It is an arithmetic number, because the mean of its divisors is an integer number (84837888).

Almost surely, 2^1222323311 is an apocalyptic number.

1222323311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222323311 is a deficient number, since it is larger than the sum of its proper divisors (135082897).

1222323311 is a wasteful number, since it uses less digits than its factorization.

1222323311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8902.

The product of its digits is 432, while the sum is 20.

The square root of 1222323311 is about 34961.7406746289. The cubic root of 1222323311 is about 1069.2075860701.

Adding to 1222323311 its reverse (1133232221), we get a palindrome (2355555532).

The spelling of 1222323311 in words is "one billion, two hundred twenty-two million, three hundred twenty-three thousand, three hundred eleven".