12091112 has 16 divisors (see below), whose sum is σ = 24732000. Its totient is φ = 5495920.

The previous prime is 12091111. The next prime is 12091133. The reversal of 12091112 is 21119021.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (12091111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68612 + ... + 68787.

It is an arithmetic number, because the mean of its divisors is an integer number (1545750).

Almost surely, 2^12091112 is an apocalyptic number.

It is an amenable number.

12091112 is an abundant number, since it is smaller than the sum of its proper divisors (12640888).

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

12091112 is a wasteful number, since it uses less digits than its factorization.

12091112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137416 (or 137412 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 12091112 is about 3477.2276313178. The cubic root of 12091112 is about 229.5208171066.

The spelling of 12091112 in words is "twelve million, ninety-one thousand, one hundred twelve".