12217008 has 40 divisors (see below), whose sum is σ = 31744000. Its totient is φ = 4048704.

The previous prime is 12216991. The next prime is 12217027. The reversal of 12217008 is 80071221.

12217008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8913 + ... + 10191.

It is an arithmetic number, because the mean of its divisors is an integer number (793600).

Almost surely, 2^12217008 is an apocalyptic number.

It is an amenable number.

12217008 is an abundant number, since it is smaller than the sum of its proper divisors (19526992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12217008 is a wasteful number, since it uses less digits than its factorization.

12217008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 12217008 is about 3495.2836794744. The cubic root of 12217008 is about 230.3146795389.

Adding to 12217008 its reverse (80071221), we get a palindrome (92288229).

The spelling of 12217008 in words is "twelve million, two hundred seventeen thousand, eight".