12238921 has 8 divisors (see below), whose sum is σ = 12812544. Its totient is φ = 11668800.

The previous prime is 12238913. The next prime is 12238939. The reversal of 12238921 is 12983221.

12238921 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 a cyclic number.

It is not a de Polignac number, because 12238921 - 2³ = 12238913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12238921.

It is not an unprimeable number, because it can be changed into a prime (12238991) 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, 8560 + ... + 9886.

It is an arithmetic number, because the mean of its divisors is an integer number (1601568).

Almost surely, 2^12238921 is an apocalyptic number.

It is an amenable number.

12238921 is a deficient number, since it is larger than the sum of its proper divisors (573623).

12238921 is a wasteful number, since it uses less digits than its factorization.

12238921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751.

The product of its digits is 1728, while the sum is 28.

The square root of 12238921 is about 3498.4169276974. The cubic root of 12238921 is about 230.4522983714.

The spelling of 12238921 in words is "twelve million, two hundred thirty-eight thousand, nine hundred twenty-one".