1222311112 has 32 divisors (see below), whose sum is σ = 2505362400. Its totient is φ = 554444800.

The previous prime is 1222311109. The next prime is 1222311127. The reversal of 1222311112 is 2111132221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29064 + ... + 57352.

It is an arithmetic number, because the mean of its divisors is an integer number (78292575).

Almost surely, 2^1222311112 is an apocalyptic number.

It is an amenable number.

1222311112 is an abundant number, since it is smaller than the sum of its proper divisors (1283051288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222311112 is a wasteful number, since it uses less digits than its factorization.

1222311112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28797 (or 28793 counting only the distinct ones).

The product of its digits is 48, while the sum is 16.

The square root of 1222311112 is about 34961.5662120563. The cubic root of 1222311112 is about 1069.2040290988.

Adding to 1222311112 its reverse (2111132221), we get a palindrome (3333443333).

The spelling of 1222311112 in words is "one billion, two hundred twenty-two million, three hundred eleven thousand, one hundred twelve".