12304221 has 8 divisors (see below), whose sum is σ = 16448544. Its totient is φ = 8181360.

The previous prime is 12304219. The next prime is 12304261. The reversal of 12304221 is 12240321.

12304221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12304221 - 2¹ = 12304219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12304221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12304261) 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, 3975 + ... + 6356.

It is an arithmetic number, because the mean of its divisors is an integer number (2056068).

Almost surely, 2^12304221 is an apocalyptic number.

It is an amenable number.

12304221 is a deficient number, since it is larger than the sum of its proper divisors (4144323).

12304221 is a wasteful number, since it uses less digits than its factorization.

12304221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10731.

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

The square root of 12304221 is about 3507.7373048733. The cubic root of 12304221 is about 230.8614262301.

Adding to 12304221 its reverse (12240321), we get a palindrome (24544542).

The spelling of 12304221 in words is "twelve million, three hundred four thousand, two hundred twenty-one".