12330421 has 2 divisors, whose sum is σ = 12330422. Its totient is φ = 12330420.

The previous prime is 12330419. The next prime is 12330431. The reversal of 12330421 is 12403321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10817521 + 1512900 = 3289^2 + 1230^2 .

It is a cyclic number.

It is not a de Polignac number, because 12330421 - 2¹ = 12330419 is a prime.

Together with 12330419, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12330395 and 12330404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12330401) 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 as a sum of consecutive naturals, namely, 6165210 + 6165211.

It is an arithmetic number, because the mean of its divisors is an integer number (6165211).

Almost surely, 2^12330421 is an apocalyptic number.

It is an amenable number.

12330421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12330421 is an equidigital number, since it uses as much as digits as its factorization.

12330421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 12330421 is about 3511.4699201332. The cubic root of 12330421 is about 231.0251716977.

Adding to 12330421 its reverse (12403321), we get a palindrome (24733742).

Subtracting 12330421 from its reverse (12403321), we obtain a square (72900 = 270²).

The spelling of 12330421 in words is "twelve million, three hundred thirty thousand, four hundred twenty-one".