12117245 has 8 divisors (see below), whose sum is σ = 16617984. Its totient is φ = 8308944.

The previous prime is 12117233. The next prime is 12117247. The reversal of 12117245 is 54271121.

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

It is not a de Polignac number, because 12117245 - 2⁸ = 12116989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12117245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12117247) 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, 173069 + ... + 173138.

It is an arithmetic number, because the mean of its divisors is an integer number (2077248).

Almost surely, 2^12117245 is an apocalyptic number.

It is an amenable number.

12117245 is a deficient number, since it is larger than the sum of its proper divisors (4500739).

12117245 is an equidigital number, since it uses as much as digits as its factorization.

12117245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346219.

The product of its digits is 560, while the sum is 23.

The square root of 12117245 is about 3480.9833380814. The cubic root of 12117245 is about 229.6860556005.

Adding to 12117245 its reverse (54271121), we get a palindrome (66388366).

The spelling of 12117245 in words is "twelve million, one hundred seventeen thousand, two hundred forty-five".