12216433 has 2 divisors, whose sum is σ = 12216434. Its totient is φ = 12216432.

The previous prime is 12216431. The next prime is 12216437. The reversal of 12216433 is 33461221.

12216433 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 can be written as a sum of positive squares in only one way, i.e., 7144929 + 5071504 = 2673^2 + 2252^2 .

It is a cyclic number.

It is not a de Polignac number, because 12216433 - 2¹ = 12216431 is a prime.

Together with 12216431, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12216431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6108216 + 6108217.

It is an arithmetic number, because the mean of its divisors is an integer number (6108217).

Almost surely, 2^12216433 is an apocalyptic number.

It is an amenable number.

12216433 is a deficient number, since it is larger than the sum of its proper divisors (1).

12216433 is an equidigital number, since it uses as much as digits as its factorization.

12216433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 12216433 is about 3495.2014248109. The cubic root of 12216433 is about 230.3110661878.

Adding to 12216433 its reverse (33461221), we get a palindrome (45677654).

The spelling of 12216433 in words is "twelve million, two hundred sixteen thousand, four hundred thirty-three".