111111112 has 48 divisors (see below), whose sum is σ = 241738560. Its totient is φ = 46899648.

The previous prime is 111111109. The next prime is 111111113. The reversal of 111111112 is 211111111.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (111111113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 665253 + ... + 665419.

It is an arithmetic number, because the mean of its divisors is an integer number (5036220).

Almost surely, 2^111111112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111111112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120869280).

111111112 is an abundant number, since it is smaller than the sum of its proper divisors (130627448).

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

111111112 is a wasteful number, since it uses less digits than its factorization.

111111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 285 counting only the distinct ones).

The product of its digits is 2, while the sum is 10.

The square root of 111111112 is about 10540.9255760583. The cubic root of 111111112 is about 480.7498580511.

Adding to 111111112 its reverse (211111111), we get a palindrome (322222223).

Subtracting 111111112 from its reverse (211111111), we obtain a palindrome (99999999).

It can be divided in two parts, 11111111 and 2, that multiplied together give a palindrome (22222222).

The spelling of 111111112 in words is "one hundred eleven million, one hundred eleven thousand, one hundred twelve".