12217047 has 8 divisors (see below), whose sum is σ = 16439280. Its totient is φ = 8069760.

The previous prime is 12217027. The next prime is 12217097. The reversal of 12217047 is 74071221.

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

It is not a de Polignac number, because 12217047 - 2⁶ = 12216983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12217027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18354 + ... + 19007.

It is an arithmetic number, because the mean of its divisors is an integer number (2054910).

Almost surely, 2^12217047 is an apocalyptic number.

12217047 is a deficient number, since it is larger than the sum of its proper divisors (4222233).

12217047 is a wasteful number, since it uses less digits than its factorization.

12217047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37473.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 12217047 is about 3495.2892584162. The cubic root of 12217047 is about 230.3149246143.

Adding to 12217047 its reverse (74071221), we get a palindrome (86288268).

The spelling of 12217047 in words is "twelve million, two hundred seventeen thousand, forty-seven".