12207215 has 12 divisors (see below), whose sum is σ = 15462504. Its totient is φ = 9250416.

The previous prime is 12207203. The next prime is 12207229. The reversal of 12207215 is 51270221.

It is not a de Polignac number, because 12207215 - 2¹⁰ = 12206191 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 1577 + ... + 5186.

It is an arithmetic number, because the mean of its divisors is an integer number (1288542).

Almost surely, 2^12207215 is an apocalyptic number.

12207215 is a deficient number, since it is larger than the sum of its proper divisors (3255289).

12207215 is an equidigital number, since it uses as much as digits as its factorization.

12207215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6806 (or 6787 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 12207215 is about 3493.8825109039. The cubic root of 12207215 is about 230.2531239715.

Adding to 12207215 its reverse (51270221), we get a palindrome (63477436).

The spelling of 12207215 in words is "twelve million, two hundred seven thousand, two hundred fifteen".