1131212112 has 40 divisors (see below), whose sum is σ = 2926553760. Its totient is φ = 376521600.

The previous prime is 1131212107. The next prime is 1131212123. The reversal of 1131212112 is 2112121311.

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 = 1131212091 and 1131212100.

It is a congruent number.

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, 16839 + ... + 50457.

It is an arithmetic number, because the mean of its divisors is an integer number (73163844).

Almost surely, 2^1131212112 is an apocalyptic number.

1131212112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1131212112 is an abundant number, since it is smaller than the sum of its proper divisors (1795341648).

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

1131212112 is a wasteful number, since it uses less digits than its factorization.

1131212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34331 (or 34325 counting only the distinct ones).

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

The square root of 1131212112 is about 33633.4968743959. The cubic root of 1131212112 is about 1041.9527266865.

Adding to 1131212112 its reverse (2112121311), we get a palindrome (3243333423).

The spelling of 1131212112 in words is "one billion, one hundred thirty-one million, two hundred twelve thousand, one hundred twelve".