12104421 has 24 divisors (see below), whose sum is σ = 19069920. Its totient is φ = 6808032.

The previous prime is 12104419. The next prime is 12104429. The reversal of 12104421 is 12440121.

It is not a de Polignac number, because 12104421 - 2¹ = 12104419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12104421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12104429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9235 + ... + 10463.

It is an arithmetic number, because the mean of its divisors is an integer number (794580).

Almost surely, 2^12104421 is an apocalyptic number.

It is an amenable number.

12104421 is a deficient number, since it is larger than the sum of its proper divisors (6965499).

12104421 is a wasteful number, since it uses less digits than its factorization.

12104421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 12104421 is about 3479.1408422195. The cubic root of 12104421 is about 229.6049993954.

Adding to 12104421 its reverse (12440121), we get a palindrome (24544542).

The spelling of 12104421 in words is "twelve million, one hundred four thousand, four hundred twenty-one".