111122122222 has 12 divisors (see below), whose sum is σ = 172629078336. Its totient is φ = 53645161640.

The previous prime is 111122122217. The next prime is 111122122229. The reversal of 111122122222 is 222221221111.

It is a super-2 number, since 2×111122122222² (a number of 23 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 111122122222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122122229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33031054 + ... + 33034417.

It is an arithmetic number, because the mean of its divisors is an integer number (14385756528).

Almost surely, 2^111122122222 is an apocalyptic number.

111122122222 is a deficient number, since it is larger than the sum of its proper divisors (61506956114).

111122122222 is an equidigital number, since it uses as much as digits as its factorization.

111122122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66065531 (or 66065502 counting only the distinct ones).

The product of its digits is 128, while the sum is 19.

Adding to 111122122222 its reverse (222221221111), we get a palindrome (333343343333).

The spelling of 111122122222 in words is "one hundred eleven billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-two".