111122331222 has 96 divisors (see below), whose sum is σ = 262086561792. Its totient is φ = 31315346496.

The previous prime is 111122331217. The next prime is 111122331253. The reversal of 111122331222 is 222133221111.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 47 ways as a sum of consecutive naturals, for example, 6450873 + ... + 6468075.

It is an arithmetic number, because the mean of its divisors is an integer number (2730068352).

Almost surely, 2^111122331222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111122331222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131043280896).

111122331222 is an abundant number, since it is smaller than the sum of its proper divisors (150964230570).

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

111122331222 is a wasteful number, since it uses less digits than its factorization.

111122331222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17522 (or 17515 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

Adding to 111122331222 its reverse (222133221111), we get a palindrome (333255552333).

The spelling of 111122331222 in words is "one hundred eleven billion, one hundred twenty-two million, three hundred thirty-one thousand, two hundred twenty-two".