12104221 has 8 divisors (see below), whose sum is σ = 12931704. Its totient is φ = 11289600.

The previous prime is 12104219. The next prime is 12104227. The reversal of 12104221 is 12240121.

It is a happy number.

12104221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 881721 + 11222500 = 939^2 + 3350^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12104221 - 2¹ = 12104219 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 (12104227) 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, 1230 + ... + 5071.

It is an arithmetic number, because the mean of its divisors is an integer number (1616463).

Almost surely, 2^12104221 is an apocalyptic number.

It is an amenable number.

12104221 is a deficient number, since it is larger than the sum of its proper divisors (827483).

12104221 is a wasteful number, since it uses less digits than its factorization.

12104221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6431.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 12104221 is about 3479.1120993725. The cubic root of 12104221 is about 229.6037348092.

Adding to 12104221 its reverse (12240121), we get a palindrome (24344342).

The spelling of 12104221 in words is "twelve million, one hundred four thousand, two hundred twenty-one".