12226399 has 2 divisors, whose sum is σ = 12226400. Its totient is φ = 12226398.

The previous prime is 12226397. The next prime is 12226433. The reversal of 12226399 is 99362221.

It is an a-pointer prime, because the next prime (12226433) can be obtained adding 12226399 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12226399 - 2¹ = 12226397 is a prime.

Together with 12226397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12226397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6113199 + 6113200.

It is an arithmetic number, because the mean of its divisors is an integer number (6113200).

Almost surely, 2^12226399 is an apocalyptic number.

12226399 is a deficient number, since it is larger than the sum of its proper divisors (1).

12226399 is an equidigital number, since it uses as much as digits as its factorization.

12226399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 12226399 is about 3496.6268030775. The cubic root of 12226399 is about 230.3736773776.

The spelling of 12226399 in words is "twelve million, two hundred twenty-six thousand, three hundred ninety-nine".