12344221 has 4 divisors (see below), whose sum is σ = 12606912. Its totient is φ = 12081532.

The previous prime is 12344201. The next prime is 12344237. The reversal of 12344221 is 12244321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12344221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12344201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131275 + ... + 131368.

It is an arithmetic number, because the mean of its divisors is an integer number (3151728).

Almost surely, 2^12344221 is an apocalyptic number.

It is an amenable number.

12344221 is a deficient number, since it is larger than the sum of its proper divisors (262691).

12344221 is an equidigital number, since it uses as much as digits as its factorization.

12344221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262690.

The product of its digits is 384, while the sum is 19.

The square root of 12344221 is about 3513.4343597113. The cubic root of 12344221 is about 231.1113260617. Note that the first 3 decimals are identical.

Adding to 12344221 its reverse (12244321), we get a palindrome (24588542).

It can be divided in two parts, 123 and 44221, that added together give a palindrome (44344).

The spelling of 12344221 in words is "twelve million, three hundred forty-four thousand, two hundred twenty-one".