111111222 has 16 divisors (see below), whose sum is σ = 228228912. Its totient is φ = 36036000.

The previous prime is 111111199. The next prime is 111111233. The reversal of 111111222 is 222111111.

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

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 111111198 and 111111207.

It is a congruent number.

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, 250029 + ... + 250472.

It is an arithmetic number, because the mean of its divisors is an integer number (14264307).

Almost surely, 2^111111222 is an apocalyptic number.

111111222 is an abundant number, since it is smaller than the sum of its proper divisors (117117690).

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

111111222 is a wasteful number, since it uses less digits than its factorization.

111111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500543.

The product of its digits is 8, while the sum is 12.

The square root of 111111222 is about 10540.9307938151. The cubic root of 111111222 is about 480.7500166985.

Adding to 111111222 its reverse (222111111), we get a palindrome (333222333).

It can be divided in two parts, 111111 and 222, that multiplied together give a palindrome (24666642).

The spelling of 111111222 in words is "one hundred eleven million, one hundred eleven thousand, two hundred twenty-two".