12421223 has 2 divisors, whose sum is σ = 12421224. Its totient is φ = 12421222.

The previous prime is 12421217. The next prime is 12421229. The reversal of 12421223 is 32212421.

12421223 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12421217) and next prime (12421229).

It is an emirp because it is prime and its reverse (32212421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12421223 - 2¹⁶ = 12355687 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12421229) 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, 6210611 + 6210612.

It is an arithmetic number, because the mean of its divisors is an integer number (6210612).

Almost surely, 2^12421223 is an apocalyptic number.

12421223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421223 is an equidigital number, since it uses as much as digits as its factorization.

12421223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 17.

The square root of 12421223 is about 3524.3755475261. The cubic root of 12421223 is about 231.5908799827.

Adding to 12421223 its reverse (32212421), we get a palindrome (44633644).

The spelling of 12421223 in words is "twelve million, four hundred twenty-one thousand, two hundred twenty-three".