12242217 has 16 divisors (see below), whose sum is σ = 17781120. Its totient is φ = 7446912.

The previous prime is 12242203. The next prime is 12242221. The reversal of 12242217 is 71224221.

12242217 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12242217 - 2⁴ = 12242201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12242193 and 12242202.

It is not an unprimeable number, because it can be changed into a prime (12242257) 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 15 ways as a sum of consecutive naturals, for example, 1708 + ... + 5234.

It is an arithmetic number, because the mean of its divisors is an integer number (1111320).

Almost surely, 2^12242217 is an apocalyptic number.

It is an amenable number.

12242217 is a deficient number, since it is larger than the sum of its proper divisors (5538903).

12242217 is a wasteful number, since it uses less digits than its factorization.

12242217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3632.

The product of its digits is 448, while the sum is 21.

The square root of 12242217 is about 3498.8879661973. The cubic root of 12242217 is about 230.4729838169.

Adding to 12242217 its reverse (71224221), we get a palindrome (83466438).

The spelling of 12242217 in words is "twelve million, two hundred forty-two thousand, two hundred seventeen".