11112111112 has 32 divisors (see below), whose sum is σ = 21370003200. Its totient is φ = 5414460544.

The previous prime is 11112111091. The next prime is 11112111133. The reversal of 11112111112 is 21111121111.

It is an interprime number because it is at equal distance from previous prime (11112111091) and next prime (11112111133).

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 = 11112111092 and 11112111101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24189 + ... + 151027.

It is an arithmetic number, because the mean of its divisors is an integer number (667812600).

Almost surely, 2^11112111112 is an apocalyptic number.

It is an amenable number.

11112111112 is a deficient number, since it is larger than the sum of its proper divisors (10257892088).

11112111112 is a wasteful number, since it uses less digits than its factorization.

11112111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127125 (or 127121 counting only the distinct ones).

The product of its digits is 4, while the sum is 13.

Adding to 11112111112 its reverse (21111121111), we get a palindrome (32223232223).

Subtracting 11112111112 from its reverse (21111121111), we obtain a palindrome (9999009999).

It can be divided in two parts, 1111 and 2111112, that multiplied together give a palindrome (2345445432).

The spelling of 11112111112 in words is "eleven billion, one hundred twelve million, one hundred eleven thousand, one hundred twelve".