111111122221112 has 16 divisors (see below), whose sum is σ = 224358996792840. Its totient is φ = 51282056409696.

The previous prime is 111111122221069. The next prime is 111111122221117. The reversal of 111111122221112 is 211122221111111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111122221117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534188087498 + ... + 534188087705.

Almost surely, 2^{111111122221112} is an apocalyptic number.

It is an amenable number.

111111122221112 is an abundant number, since it is smaller than the sum of its proper divisors (113247874571728).

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

111111122221112 is a wasteful number, since it uses less digits than its factorization.

111111122221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068376175222 (or 1068376175218 counting only the distinct ones).

The product of its digits is 32, while the sum is 20.

Adding to 111111122221112 its reverse (211122221111111), we get a palindrome (322233343332223).

The spelling of 111111122221112 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred twelve".