111121112 has 32 divisors (see below), whose sum is σ = 227733120. Its totient is φ = 50603520.

The previous prime is 111121097. The next prime is 111121117. The reversal of 111121112 is 211121111.

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 junction number, because it is equal to n+sod(n) for n = 111121093 and 111121102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8963 + ... + 17394.

It is an arithmetic number, because the mean of its divisors is an integer number (7116660).

Almost surely, 2^111121112 is an apocalyptic number.

It is an amenable number.

111121112 is an abundant number, since it is smaller than the sum of its proper divisors (116612008).

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

111121112 is a wasteful number, since it uses less digits than its factorization.

111121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26411 (or 26407 counting only the distinct ones).

The product of its digits is 4, while the sum is 11.

The square root of 111121112 is about 10541.3999070332. The cubic root of 111121112 is about 480.7642801141.

Adding to 111121112 its reverse (211121111), we get a palindrome (322242223).

Subtracting 111121112 from its reverse (211121111), we obtain a palindrome (99999999).

It can be divided in two parts, 1111 and 21112, that multiplied together give a palindrome (23455432).

The spelling of 111121112 in words is "one hundred eleven million, one hundred twenty-one thousand, one hundred twelve".