12430221 has 16 divisors (see below), whose sum is σ = 16943040. Its totient is φ = 8104320.

The previous prime is 12430219. The next prime is 12430267. The reversal of 12430221 is 12203421.

It is not a de Polignac number, because 12430221 - 2¹ = 12430219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12430221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12430211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46075 + ... + 46343.

It is an arithmetic number, because the mean of its divisors is an integer number (1058940).

Almost surely, 2^12430221 is an apocalyptic number.

It is an amenable number.

12430221 is a deficient number, since it is larger than the sum of its proper divisors (4512819).

12430221 is a wasteful number, since it uses less digits than its factorization.

12430221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 12430221 is about 3525.6518546221. The cubic root of 12430221 is about 231.6467883731.

Adding to 12430221 its reverse (12203421), we get a palindrome (24633642).

The spelling of 12430221 in words is "twelve million, four hundred thirty thousand, two hundred twenty-one".