12384021 has 8 divisors (see below), whose sum is σ = 17782240. Its totient is φ = 7620912.

The previous prime is 12384019. The next prime is 12384023. The reversal of 12384021 is 12048321.

12384021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12384019) and next prime (12384023).

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

It is not a de Polignac number, because 12384021 - 2¹ = 12384019 is a prime.

It is a super-2 number, since 2×12384021² = 306727952256882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12384023) 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, 158731 + ... + 158808.

It is an arithmetic number, because the mean of its divisors is an integer number (2222780).

Almost surely, 2^12384021 is an apocalyptic number.

It is an amenable number.

12384021 is a deficient number, since it is larger than the sum of its proper divisors (5398219).

12384021 is a wasteful number, since it uses less digits than its factorization.

12384021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317555.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 12384021 is about 3519.0937753916. The cubic root of 12384021 is about 231.3594411610.

The spelling of 12384021 in words is "twelve million, three hundred eighty-four thousand, twenty-one".