12421327 has 2 divisors, whose sum is σ = 12421328. Its totient is φ = 12421326.

The previous prime is 12421291. The next prime is 12421333. The reversal of 12421327 is 72312421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12421327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12421298 and 12421307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12421397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210663 + 6210664.

It is an arithmetic number, because the mean of its divisors is an integer number (6210664).

Almost surely, 2^12421327 is an apocalyptic number.

12421327 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421327 is an equidigital number, since it uses as much as digits as its factorization.

12421327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 22.

The square root of 12421327 is about 3524.3903018820. The cubic root of 12421327 is about 231.5915263330.

Adding to 12421327 its reverse (72312421), we get a palindrome (84733748).

The spelling of 12421327 in words is "twelve million, four hundred twenty-one thousand, three hundred twenty-seven".