11123231112 has 96 divisors (see below), whose sum is σ = 35926001280. Its totient is φ = 3039886080.

The previous prime is 11123231083. The next prime is 11123231137. The reversal of 11123231112 is 21113232111.

11123231112 is a `hidden beast` number, since 111 + 232 + 311 + 12 = 666.

11123231112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 468189 + ... + 491372.

It is an arithmetic number, because the mean of its divisors is an integer number (374229180).

Almost surely, 2^11123231112 is an apocalyptic number.

11123231112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11123231112 is an abundant number, since it is smaller than the sum of its proper divisors (24802770168).

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

11123231112 is a wasteful number, since it uses less digits than its factorization.

11123231112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959603 (or 959596 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 11123231112 its reverse (21113232111), we get a palindrome (32236463223).

Subtracting 11123231112 from its reverse (21113232111), we obtain a palindrome (9990000999).

The spelling of 11123231112 in words is "eleven billion, one hundred twenty-three million, two hundred thirty-one thousand, one hundred twelve".