12228717 has 8 divisors (see below), whose sum is σ = 16377696. Its totient is φ = 8116112.

The previous prime is 12228707. The next prime is 12228721. The reversal of 12228717 is 71782221.

It is a happy number.

12228717 is digitally balanced in base 3, 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.

It is a cyclic number.

It is not a de Polignac number, because 12228717 - 2⁶ = 12228653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12228707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8298 + ... + 9659.

It is an arithmetic number, because the mean of its divisors is an integer number (2047212).

Almost surely, 2^12228717 is an apocalyptic number.

It is an amenable number.

12228717 is a deficient number, since it is larger than the sum of its proper divisors (4148979).

12228717 is a wasteful number, since it uses less digits than its factorization.

12228717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18187.

The product of its digits is 3136, while the sum is 30.

The square root of 12228717 is about 3496.9582496793. The cubic root of 12228717 is about 230.3882352873.

The spelling of 12228717 in words is "twelve million, two hundred twenty-eight thousand, seven hundred seventeen".