12139216 has 20 divisors (see below), whose sum is σ = 24543072. Its totient is φ = 5805536.

The previous prime is 12139189. The next prime is 12139229. The reversal of 12139216 is 61293121.

12139216 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, 16126 + ... + 16861.

Almost surely, 2^12139216 is an apocalyptic number.

12139216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12139216 is an abundant number, since it is smaller than the sum of its proper divisors (12403856).

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

12139216 is a wasteful number, since it uses less digits than its factorization.

12139216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33018 (or 33012 counting only the distinct ones).

The product of its digits is 648, while the sum is 25.

The square root of 12139216 is about 3484.1377699511. The cubic root of 12139216 is about 229.8247941044.

The spelling of 12139216 in words is "twelve million, one hundred thirty-nine thousand, two hundred sixteen".