12044221 has 4 divisors (see below), whose sum is σ = 13764832. Its totient is φ = 10323612.

The previous prime is 12044191. The next prime is 12044231. The reversal of 12044221 is 12244021.

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 12044221 - 2⁵ = 12044189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12044195 and 12044204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12044231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860295 + ... + 860308.

It is an arithmetic number, because the mean of its divisors is an integer number (3441208).

Almost surely, 2^12044221 is an apocalyptic number.

It is an amenable number.

12044221 is a deficient number, since it is larger than the sum of its proper divisors (1720611).

12044221 is an equidigital number, since it uses as much as digits as its factorization.

12044221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720610.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 12044221 is about 3470.4784972681. The cubic root of 12044221 is about 229.2237282627.

Adding to 12044221 its reverse (12244021), we get a palindrome (24288242).

The spelling of 12044221 in words is "twelve million, forty-four thousand, two hundred twenty-one".