111111122122 has 128 divisors (see below), whose sum is σ = 230791680000. Its totient is φ = 38726553600.

The previous prime is 111111122117. The next prime is 111111122123. The reversal of 111111122122 is 221221111111.

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

It is a junction number, because it is equal to n+sod(n) for n = 111111122096 and 111111122105.

It is not an unprimeable number, because it can be changed into a prime (111111122123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8379754 + ... + 8393002.

It is an arithmetic number, because the mean of its divisors is an integer number (1803060000).

Almost surely, 2^111111122122 is an apocalyptic number.

111111122122 is an abundant number, since it is smaller than the sum of its proper divisors (119680557878).

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

111111122122 is a wasteful number, since it uses less digits than its factorization.

111111122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13412.

The product of its digits is 16, while the sum is 16.

Adding to 111111122122 its reverse (221221111111), we get a palindrome (332332233233).

It can be divided in two parts, 1111111 and 22122, that multiplied together give a palindrome (24579997542).

The spelling of 111111122122 in words is "one hundred eleven billion, one hundred eleven million, one hundred twenty-two thousand, one hundred twenty-two".