12189412 has 12 divisors (see below), whose sum is σ = 22454320. Its totient is φ = 5773896.

The previous prime is 12189371. The next prime is 12189439. The reversal of 12189412 is 21498121.

It is a super-3 number, since 3×12189412³ (a number of 22 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

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, 80118 + ... + 80269.

Almost surely, 2^12189412 is an apocalyptic number.

It is an amenable number.

12189412 is a deficient number, since it is larger than the sum of its proper divisors (10264908).

12189412 is a wasteful number, since it uses less digits than its factorization.

12189412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160410 (or 160408 counting only the distinct ones).

The product of its digits is 1152, while the sum is 28.

The square root of 12189412 is about 3491.3338425307. Note that the first 3 decimals coincide. The cubic root of 12189412 is about 230.1411358088.

The spelling of 12189412 in words is "twelve million, one hundred eighty-nine thousand, four hundred twelve".