12243215 has 8 divisors (see below), whose sum is σ = 15050448. Its totient is φ = 9555520.

The previous prime is 12243197. The next prime is 12243221. The reversal of 12243215 is 51234221.

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

It is not a de Polignac number, because 12243215 - 2⁶ = 12243151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 29657 + ... + 30066.

It is an arithmetic number, because the mean of its divisors is an integer number (1881306).

Almost surely, 2^12243215 is an apocalyptic number.

12243215 is a deficient number, since it is larger than the sum of its proper divisors (2807233).

12243215 is an equidigital number, since it uses as much as digits as its factorization.

12243215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59769.

The product of its digits is 480, while the sum is 20.

The square root of 12243215 is about 3499.0305800321. The cubic root of 12243215 is about 230.4792464567.

Adding to 12243215 its reverse (51234221), we get a palindrome (63477436).

The spelling of 12243215 in words is "twelve million, two hundred forty-three thousand, two hundred fifteen".