12214421 has 4 divisors (see below), whose sum is σ = 12276000. Its totient is φ = 12152844.

The previous prime is 12214417. The next prime is 12214441. The reversal of 12214421 is 12441221.

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 not a de Polignac number, because 12214421 - 2² = 12214417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12214421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12214441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30491 + ... + 30888.

It is an arithmetic number, because the mean of its divisors is an integer number (3069000).

Almost surely, 2^12214421 is an apocalyptic number.

It is an amenable number.

12214421 is a deficient number, since it is larger than the sum of its proper divisors (61579).

12214421 is an equidigital number, since it uses as much as digits as its factorization.

12214421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61578.

The product of its digits is 128, while the sum is 17.

The square root of 12214421 is about 3494.9135897759. The cubic root of 12214421 is about 230.2984217084.

Adding to 12214421 its reverse (12441221), we get a palindrome (24655642).

The spelling of 12214421 in words is "twelve million, two hundred fourteen thousand, four hundred twenty-one".