12217430 has 16 divisors (see below), whose sum is σ = 22057920. Its totient is φ = 4872192.

The previous prime is 12217427. The next prime is 12217459. The reversal of 12217430 is 3471221.

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, 2006 + ... + 5334.

It is an arithmetic number, because the mean of its divisors is an integer number (1378620).

Almost surely, 2^12217430 is an apocalyptic number.

12217430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12217430 is a deficient number, since it is larger than the sum of its proper divisors (9840490).

12217430 is a wasteful number, since it uses less digits than its factorization.

12217430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 12217430 is about 3495.3440460132. The cubic root of 12217430 is about 230.3173313523.

Adding to 12217430 its reverse (3471221), we get a palindrome (15688651).

The spelling of 12217430 in words is "twelve million, two hundred seventeen thousand, four hundred thirty".