12066216 has 64 divisors (see below), whose sum is σ = 32486400. Its totient is φ = 3722688.

The previous prime is 12066203. The next prime is 12066221. The reversal of 12066216 is 61266021.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 15 ways as a sum of consecutive naturals, for example, 21151 + ... + 21713.

It is an arithmetic number, because the mean of its divisors is an integer number (507600).

Almost surely, 2^12066216 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 12066216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16243200).

12066216 is an abundant number, since it is smaller than the sum of its proper divisors (20420184).

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

12066216 is a wasteful number, since it uses less digits than its factorization.

12066216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 12066216 is about 3473.6459232340. The cubic root of 12066216 is about 229.3631785417.

The spelling of 12066216 in words is "twelve million, sixty-six thousand, two hundred sixteen".