111222312 has 16 divisors (see below), whose sum is σ = 278055840. Its totient is φ = 37074096.

The previous prime is 111222301. The next prime is 111222341. The reversal of 111222312 is 213222111.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 111222291 and 111222300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2317108 + ... + 2317155.

It is an arithmetic number, because the mean of its divisors is an integer number (17378490).

Almost surely, 2^111222312 is an apocalyptic number.

111222312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111222312 is an abundant number, since it is smaller than the sum of its proper divisors (166833528).

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

111222312 is a wasteful number, since it uses less digits than its factorization.

111222312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4634272 (or 4634268 counting only the distinct ones).

The product of its digits is 48, while the sum is 15.

The square root of 111222312 is about 10546.1989361096. The cubic root of 111222312 is about 480.9101827301.

Adding to 111222312 its reverse (213222111), we get a palindrome (324444423).

The spelling of 111222312 in words is "one hundred eleven million, two hundred twenty-two thousand, three hundred twelve".