12217433 has 4 divisors (see below), whose sum is σ = 12288228. Its totient is φ = 12146640.

The previous prime is 12217427. The next prime is 12217459. The reversal of 12217433 is 33471221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10843849 + 1373584 = 3293^2 + 1172^2 .

It is a cyclic number.

It is not a de Polignac number, because 12217433 - 2⁴ = 12217417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12217399 and 12217408.

It is not an unprimeable number, because it can be changed into a prime (12217333) 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 in 3 ways as a sum of consecutive naturals, for example, 35138 + ... + 35483.

It is an arithmetic number, because the mean of its divisors is an integer number (3072057).

Almost surely, 2^12217433 is an apocalyptic number.

It is an amenable number.

12217433 is a deficient number, since it is larger than the sum of its proper divisors (70795).

12217433 is an equidigital number, since it uses as much as digits as its factorization.

12217433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70794.

The product of its digits is 1008, while the sum is 23.

The square root of 12217433 is about 3495.3444751555. The cubic root of 12217433 is about 230.3173502038.

Adding to 12217433 its reverse (33471221), we get a palindrome (45688654).

The spelling of 12217433 in words is "twelve million, two hundred seventeen thousand, four hundred thirty-three".