12201666 has 8 divisors (see below), whose sum is σ = 24403344. Its totient is φ = 4067220.

The previous prime is 12201659. The next prime is 12201671. The reversal of 12201666 is 66610221.

12201666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

12201666 is an admirable number.

It is a Curzon 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, 1016800 + ... + 1016811.

It is an arithmetic number, because the mean of its divisors is an integer number (3050418).

Almost surely, 2^12201666 is an apocalyptic number.

12201666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12201666 is a wasteful number, since it uses less digits than its factorization.

12201666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033616.

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

The square root of 12201666 is about 3493.0883183796. The cubic root of 12201666 is about 230.2182301749.

Adding to 12201666 its reverse (66610221), we get a palindrome (78811887).

The spelling of 12201666 in words is "twelve million, two hundred one thousand, six hundred sixty-six".