12330021 has 12 divisors (see below), whose sum is σ = 18070976. Its totient is φ = 7472520.

The previous prime is 12330011. The next prime is 12330023. The reversal of 12330021 is 12003321.

It is a happy number.

It is not a de Polignac number, because 12330021 - 2⁶ = 12329957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12329979 and 12330006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12330023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16621 + ... + 17346.

Almost surely, 2^12330021 is an apocalyptic number.

12330021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12330021 is a deficient number, since it is larger than the sum of its proper divisors (5740955).

12330021 is a wasteful number, since it uses less digits than its factorization.

12330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33992 (or 33981 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 12330021 is about 3511.4129634664. The cubic root of 12330021 is about 231.0226735114.

Adding to 12330021 its reverse (12003321), we get a palindrome (24333342).

It can be divided in two parts, 123300 and 21, that added together give a palindrome (123321).

The spelling of 12330021 in words is "twelve million, three hundred thirty thousand, twenty-one".