111122212 has 6 divisors (see below), whose sum is σ = 194463878. Its totient is φ = 55561104.

The previous prime is 111122201. The next prime is 111122213. The reversal of 111122212 is 212221111.

It can be written as a sum of positive squares in only one way, i.e., 100520676 + 10601536 = 10026^2 + 3256^2 .

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 = 111122192 and 111122201.

It is not an unprimeable number, because it can be changed into a prime (111122213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13890273 + ... + 13890280.

Almost surely, 2^111122212 is an apocalyptic number.

It is an amenable number.

111122212 is a deficient number, since it is larger than the sum of its proper divisors (83341666).

111122212 is a wasteful number, since it uses less digits than its factorization.

111122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27780557 (or 27780555 counting only the distinct ones).

The product of its digits is 16, while the sum is 13.

The square root of 111122212 is about 10541.4520821375. The cubic root of 111122212 is about 480.7658664882.

Adding to 111122212 its reverse (212221111), we get a palindrome (323343323).

The spelling of 111122212 in words is "one hundred eleven million, one hundred twenty-two thousand, two hundred twelve".