111123222 has 64 divisors (see below), whose sum is σ = 260112384. Its totient is φ = 30996000.

The previous prime is 111123197. The next prime is 111123253. The reversal of 111123222 is 222321111.

It is a super-2 number, since 2×111123222² = 24696740935322568, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 442597 + ... + 442847.

It is an arithmetic number, because the mean of its divisors is an integer number (4064256).

Almost surely, 2^111123222 is an apocalyptic number.

It is a pronic number, being equal to 10541×10542.

It is a practical number, because each smaller number is the sum of distinct divisors of 111123222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130056192).

111123222 is an abundant number, since it is smaller than the sum of its proper divisors (148989162).

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

111123222 is a wasteful number, since it uses less digits than its factorization.

111123222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473.

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

The square root of 111123222 is about 10541.4999881421. The cubic root of 111123222 is about 480.7673230589.

Adding to 111123222 its reverse (222321111), we get a palindrome (333444333).

The spelling of 111123222 in words is "one hundred eleven million, one hundred twenty-three thousand, two hundred twenty-two".