111111111112 has 16 divisors (see below), whose sum is σ = 208458333360. Its totient is φ = 55522222224.

The previous prime is 111111111103. The next prime is 111111111149. The reversal of 111111111112 is 211111111111.

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 a junction number, because it is equal to n+sod(n) for n = 111111111092 and 111111111101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4152498 + ... + 4179169.

It is an arithmetic number, because the mean of its divisors is an integer number (13028645835).

Almost surely, 2^111111111112 is an apocalyptic number.

It is an amenable number.

111111111112 is a deficient number, since it is larger than the sum of its proper divisors (97347222248).

111111111112 is a wasteful number, since it uses less digits than its factorization.

111111111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8333340 (or 8333336 counting only the distinct ones).

The product of its digits is 2, while the sum is 13.

Adding to 111111111112 its reverse (211111111111), we get a palindrome (322222222223).

Subtracting 111111111112 from its reverse (211111111111), we obtain a palindrome (99999999999).

It can be divided in two parts, 11111111111 and 2, that multiplied together give a palindrome (22222222222).

The spelling of 111111111112 in words is "one hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred twelve".