1222112331 has 48 divisors (see below), whose sum is σ = 2024056320. Its totient is φ = 703805760.

The previous prime is 1222112329. The next prime is 1222112347. The reversal of 1222112331 is 1332112221.

1222112331 is a `hidden beast` number, since 1 + 222 + 112 + 331 = 666.

It is not a de Polignac number, because 1222112331 - 2¹ = 1222112329 is a prime.

It is a super-2 number, since 2×1222112331² = 2987117099164507122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222112431) 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 47 ways as a sum of consecutive naturals, for example, 153630 + ... + 161388.

It is an arithmetic number, because the mean of its divisors is an integer number (42167840).

Almost surely, 2^1222112331 is an apocalyptic number.

1222112331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222112331 is a deficient number, since it is larger than the sum of its proper divisors (801943989).

1222112331 is a wasteful number, since it uses less digits than its factorization.

1222112331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7856 (or 7853 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1222112331 is about 34958.7232461370. The cubic root of 1222112331 is about 1069.1460654139.

Adding to 1222112331 its reverse (1332112221), we get a palindrome (2554224552).

The spelling of 1222112331 in words is "one billion, two hundred twenty-two million, one hundred twelve thousand, three hundred thirty-one".