1223221112 has 16 divisors (see below), whose sum is σ = 2307612840. Its totient is φ = 607857696.

The previous prime is 1223221093. The next prime is 1223221169. The reversal of 1223221112 is 2111223221.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 467723 + ... + 470330.

Almost surely, 2^1223221112 is an apocalyptic number.

It is an amenable number.

1223221112 is a deficient number, since it is larger than the sum of its proper divisors (1084391728).

1223221112 is a wasteful number, since it uses less digits than its factorization.

1223221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938222 (or 938218 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 1223221112 is about 34974.5780818011. The cubic root of 1223221112 is about 1069.4693009813.

Adding to 1223221112 its reverse (2111223221), we get a palindrome (3334444333).

The spelling of 1223221112 in words is "one billion, two hundred twenty-three million, two hundred twenty-one thousand, one hundred twelve".