12217434 has 16 divisors (see below), whose sum is σ = 24730272. Its totient is φ = 4023248.

The previous prime is 12217427. The next prime is 12217459. The reversal of 12217434 is 43471221.

It is a happy number.

It is a Curzon 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, 11769 + ... + 12764.

It is an arithmetic number, because the mean of its divisors is an integer number (1545642).

Almost surely, 2^12217434 is an apocalyptic number.

12217434 is an abundant number, since it is smaller than the sum of its proper divisors (12512838).

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

12217434 is a wasteful number, since it uses less digits than its factorization.

12217434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24621.

The product of its digits is 1344, while the sum is 24.

The square root of 12217434 is about 3495.3446182029. The cubic root of 12217434 is about 230.3173564877.

Adding to 12217434 its reverse (43471221), we get a palindrome (55688655).

The spelling of 12217434 in words is "twelve million, two hundred seventeen thousand, four hundred thirty-four".