111111132222 has 24 divisors (see below), whose sum is σ = 241058835576. Its totient is φ = 36988113456.

The previous prime is 111111132107. The next prime is 111111132227. The reversal of 111111132222 is 222231111111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 = 111111132195 and 111111132204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111132227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4063548 + ... + 4090799.

It is an arithmetic number, because the mean of its divisors is an integer number (10044118149).

Almost surely, 2^111111132222 is an apocalyptic number.

111111132222 is an abundant number, since it is smaller than the sum of its proper divisors (129947703354).

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

111111132222 is a wasteful number, since it uses less digits than its factorization.

111111132222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155112 (or 8155109 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

Adding to 111111132222 its reverse (222231111111), we get a palindrome (333342243333).

The spelling of 111111132222 in words is "one hundred eleven billion, one hundred eleven million, one hundred thirty-two thousand, two hundred twenty-two".