1112111111112 has 32 divisors (see below), whose sum is σ = 2780303637600. Its totient is φ = 370700255744.

The previous prime is 1112111111099. The next prime is 1112111111197. The reversal of 1112111111112 is 2111111112111.

It is a happy number.

It is a super-2 number, since 2×1112111111112² (a number of 25 digits) contains 22 as substring.

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 = 1112111111091 and 1112111111100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4817464 + ... + 5043032.

It is an arithmetic number, because the mean of its divisors is an integer number (86884488675).

Almost surely, 2^{1112111111112} is an apocalyptic number.

1112111111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1112111111112 is an abundant number, since it is smaller than the sum of its proper divisors (1668192526488).

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

1112111111112 is a wasteful number, since it uses less digits than its factorization.

1112111111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431005 (or 431001 counting only the distinct ones).

The product of its digits is 4, while the sum is 15.

Adding to 1112111111112 its reverse (2111111112111), we get a palindrome (3223222223223).

Subtracting 1112111111112 from its reverse (2111111112111), we obtain a palindrome (999000000999).

It can be divided in two parts, 111 and 2111111112, that multiplied together give a palindrome (234333333432).

The spelling of 1112111111112 in words is "one trillion, one hundred twelve billion, one hundred eleven million, one hundred eleven thousand, one hundred twelve".