12217075 has 12 divisors (see below), whose sum is σ = 16314928. Its totient is φ = 9021600.

The previous prime is 12217027. The next prime is 12217097. The reversal of 12217075 is 57071221.

It is a happy number.

It is not a de Polignac number, because 12217075 - 2⁷ = 12216947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18471 + ... + 19120.

Almost surely, 2^12217075 is an apocalyptic number.

12217075 is a deficient number, since it is larger than the sum of its proper divisors (4097853).

12217075 is a wasteful number, since it uses less digits than its factorization.

12217075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37614 (or 37609 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 12217075 is about 3495.2932638049. The cubic root of 12217075 is about 230.3151005655.

Adding to 12217075 its reverse (57071221), we get a palindrome (69288296).

The spelling of 12217075 in words is "twelve million, two hundred seventeen thousand, seventy-five".