12421267 has 2 divisors, whose sum is σ = 12421268. Its totient is φ = 12421266.

The previous prime is 12421261. The next prime is 12421291. The reversal of 12421267 is 76212421.

12421267 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (76212421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12421267 is a prime.

It is not a weakly prime, because it can be changed into another prime (12421261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210633 + 6210634.

It is an arithmetic number, because the mean of its divisors is an integer number (6210634).

Almost surely, 2^12421267 is an apocalyptic number.

12421267 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421267 is an equidigital number, since it uses as much as digits as its factorization.

12421267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 25.

The square root of 12421267 is about 3524.3817897611. The cubic root of 12421267 is about 231.5911534390.

Adding to 12421267 its reverse (76212421), we get a palindrome (88633688).

The spelling of 12421267 in words is "twelve million, four hundred twenty-one thousand, two hundred sixty-seven".