1111111112 has 16 divisors (see below), whose sum is σ = 2102805360. Its totient is φ = 550363024.

The previous prime is 1111111097. The next prime is 1111111121. The reversal of 1111111112 is 2111111111.

It is a happy number.

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 = 1111111093 and 1111111102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648158 + ... + 649869.

It is an arithmetic number, because the mean of its divisors is an integer number (131425335).

Almost surely, 2^1111111112 is an apocalyptic number.

It is an amenable number.

1111111112 is a deficient number, since it is larger than the sum of its proper divisors (991694248).

1111111112 is a wasteful number, since it uses less digits than its factorization.

1111111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298140 (or 1298136 counting only the distinct ones).

The product of its digits is 2, while the sum is 11.

The square root of 1111111112 is about 33333.3333466667. Note that the first 4 decimals coincide. The cubic root of 1111111112 is about 1035.7441689275.

Adding to 1111111112 its reverse (2111111111), we get a palindrome (3222222223).

Subtracting 1111111112 from its reverse (2111111111), we obtain a palindrome (999999999).

It can be divided in two parts, 111111111 and 2, that multiplied together give a palindrome (222222222).

The spelling of 1111111112 in words is "one billion, one hundred eleven million, one hundred eleven thousand, one hundred twelve".