12027216 has 40 divisors (see below), whose sum is σ = 31205344. Its totient is φ = 3991680.

The previous prime is 12027179. The next prime is 12027271. The reversal of 12027216 is 61272021.

It is a junction number, because it is equal to n+sod(n) for n = 12027192 and 12027201.

It is a congruent number.

It is an unprimeable number.

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, 15510 + ... + 16266.

Almost surely, 2^12027216 is an apocalyptic number.

12027216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12027216 is an abundant number, since it is smaller than the sum of its proper divisors (19178128).

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

12027216 is a wasteful number, since it uses less digits than its factorization.

12027216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1093 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 12027216 is about 3468.0276815504. The cubic root of 12027216 is about 229.1157986197.

Adding to 12027216 its reverse (61272021), we get a palindrome (73299237).

The spelling of 12027216 in words is "twelve million, twenty-seven thousand, two hundred sixteen".