111222212 has 12 divisors (see below), whose sum is σ = 194720316. Its totient is φ = 55587840.

The previous prime is 111222193. The next prime is 111222229. The reversal of 111222212 is 212222111.

It can be written as a sum of positive squares in 2 ways, for example, as 84015556 + 27206656 = 9166^2 + 5216^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9308 + ... + 17580.

It is an arithmetic number, because the mean of its divisors is an integer number (16226693).

Almost surely, 2^111222212 is an apocalyptic number.

It is an amenable number.

111222212 is a deficient number, since it is larger than the sum of its proper divisors (83498104).

111222212 is a wasteful number, since it uses less digits than its factorization.

111222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11638 (or 11636 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 111222212 is about 10546.1941950639. The cubic root of 111222212 is about 480.9100386012.

Adding to 111222212 its reverse (212222111), we get a palindrome (323444323).

The spelling of 111222212 in words is "one hundred eleven million, two hundred twenty-two thousand, two hundred twelve".