12280112 has 40 divisors (see below), whose sum is σ = 26237904. Its totient is φ = 5531904.

The previous prime is 12280111. The next prime is 12280127. The reversal of 12280112 is 21108221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12280111) 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, 8258 + ... + 9630.

Almost surely, 2^12280112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12280112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13118952).

12280112 is an abundant number, since it is smaller than the sum of its proper divisors (13957792).

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

12280112 is a wasteful number, since it uses less digits than its factorization.

12280112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437 (or 1431 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 12280112 is about 3504.2990739947. The cubic root of 12280112 is about 230.7105436634.

Adding to 12280112 its reverse (21108221), we get a palindrome (33388333).

The spelling of 12280112 in words is "twelve million, two hundred eighty thousand, one hundred twelve".