111222222 has 16 divisors (see below), whose sum is σ = 228456912. Its totient is φ = 36072000.

The previous prime is 111222193. The next prime is 111222229. The reversal of 111222222 is 222222111.

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

111222222 is a modest number, since divided by 22222 gives 1112 as remainder.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250279 + ... + 250722.

It is an arithmetic number, because the mean of its divisors is an integer number (14278557).

Almost surely, 2^111222222 is an apocalyptic number.

111222222 is an abundant number, since it is smaller than the sum of its proper divisors (117234690).

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

111222222 is a wasteful number, since it uses less digits than its factorization.

111222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501043.

The product of its digits is 64, while the sum is 15.

The square root of 111222222 is about 10546.1946691686. The cubic root of 111222222 is about 480.9100530141.

Adding to 111222222 its reverse (222222111), we get a palindrome (333444333).

It can be divided in two parts, 111 and 222222, that multiplied together give a palindrome (24666642).

The spelling of 111222222 in words is "one hundred eleven million, two hundred twenty-two thousand, two hundred twenty-two".