1222331331 has 32 divisors (see below), whose sum is σ = 1862118720. Its totient is φ = 706535424.

The previous prime is 1222331311. The next prime is 1222331413. The reversal of 1222331331 is 1331332221.

It is not a de Polignac number, because 1222331331 - 2⁷ = 1222331203 is a prime.

It is a super-2 number, since 2×1222331331² = 2988187765488463122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1222331298 and 1222331307.

It is not an unprimeable number, because it can be changed into a prime (1222331311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 391605 + ... + 394713.

It is an arithmetic number, because the mean of its divisors is an integer number (58191210).

Almost surely, 2^1222331331 is an apocalyptic number.

1222331331 is a deficient number, since it is larger than the sum of its proper divisors (639787389).

1222331331 is a wasteful number, since it uses less digits than its factorization.

1222331331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3735.

The product of its digits is 648, while the sum is 21.

The square root of 1222331331 is about 34961.8553712471. The cubic root of 1222331331 is about 1069.2099245201.

Adding to 1222331331 its reverse (1331332221), we get a palindrome (2553663552).

The spelling of 1222331331 in words is "one billion, two hundred twenty-two million, three hundred thirty-one thousand, three hundred thirty-one".