12281912 has 16 divisors (see below), whose sum is σ = 23419800. Its totient is φ = 6036640.

The previous prime is 12281909. The next prime is 12281947. The reversal of 12281912 is 21918221.

12281912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12539 + ... + 13482.

Almost surely, 2^12281912 is an apocalyptic number.

It is an amenable number.

12281912 is a deficient number, since it is larger than the sum of its proper divisors (11137888).

12281912 is a wasteful number, since it uses less digits than its factorization.

12281912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26086 (or 26082 counting only the distinct ones).

The product of its digits is 576, while the sum is 26.

The square root of 12281912 is about 3504.5558919783. Note that the first 3 decimals coincide. The cubic root of 12281912 is about 230.7218155120.

The spelling of 12281912 in words is "twelve million, two hundred eighty-one thousand, nine hundred twelve".