12043221 has 8 divisors (see below), whose sum is σ = 16575744. Its totient is φ = 7769760.

The previous prime is 12043219. The next prime is 12043267. The reversal of 12043221 is 12234021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12043221 - 2¹ = 12043219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12043221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12043211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64656 + ... + 64841.

It is an arithmetic number, because the mean of its divisors is an integer number (2071968).

Almost surely, 2^12043221 is an apocalyptic number.

It is an amenable number.

12043221 is a deficient number, since it is larger than the sum of its proper divisors (4532523).

12043221 is a wasteful number, since it uses less digits than its factorization.

12043221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129531.

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

The square root of 12043221 is about 3470.3344219254. The cubic root of 12043221 is about 229.2173841393.

Adding to 12043221 its reverse (12234021), we get a palindrome (24277242).

The spelling of 12043221 in words is "twelve million, forty-three thousand, two hundred twenty-one".