12197217 has 8 divisors (see below), whose sum is σ = 16305120. Its totient is φ = 8110400.

The previous prime is 12197191. The next prime is 12197219. The reversal of 12197217 is 71279121.

It is a happy number.

12197217 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.

It is a cyclic number.

It is not a de Polignac number, because 12197217 - 2⁷ = 12197089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12197219) 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, 3867 + ... + 6272.

It is an arithmetic number, because the mean of its divisors is an integer number (2038140).

Almost surely, 2^12197217 is an apocalyptic number.

It is an amenable number.

12197217 is a deficient number, since it is larger than the sum of its proper divisors (4107903).

12197217 is a wasteful number, since it uses less digits than its factorization.

12197217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10543.

The product of its digits is 1764, while the sum is 30.

The square root of 12197217 is about 3492.4514313015. The cubic root of 12197217 is about 230.1902458702.

The spelling of 12197217 in words is "twelve million, one hundred ninety-seven thousand, two hundred seventeen".