1113212112 has 40 divisors (see below), whose sum is σ = 2878845504. Its totient is φ = 370677504.

The previous prime is 1113212047. The next prime is 1113212117. The reversal of 1113212112 is 2112123111.

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 = 1113212091 and 1113212100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113212117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35388 + ... + 58980.

Almost surely, 2^1113212112 is an apocalyptic number.

1113212112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1113212112 is an abundant number, since it is smaller than the sum of its proper divisors (1765633392).

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

1113212112 is a wasteful number, since it uses less digits than its factorization.

1113212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24587 (or 24581 counting only the distinct ones).

The product of its digits is 24, while the sum is 15.

The square root of 1113212112 is about 33364.8334627943. The cubic root of 1113212112 is about 1036.3965874299.

Adding to 1113212112 its reverse (2112123111), we get a palindrome (3225335223).

The spelling of 1113212112 in words is "one billion, one hundred thirteen million, two hundred twelve thousand, one hundred twelve".