12216303 has 12 divisors (see below), whose sum is σ = 19250088. Its totient is φ = 7403760.

The previous prime is 12216301. The next prime is 12216313. The reversal of 12216303 is 30361221.

12216303 is a `hidden beast` number, since 12 + 21 + 630 + 3 = 666.

It is not a de Polignac number, because 12216303 - 2¹ = 12216301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12216301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61600 + ... + 61797.

It is an arithmetic number, because the mean of its divisors is an integer number (1604174).

Almost surely, 2^12216303 is an apocalyptic number.

12216303 is a deficient number, since it is larger than the sum of its proper divisors (7033785).

12216303 is a wasteful number, since it uses less digits than its factorization.

12216303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123414 (or 123411 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 12216303 is about 3495.1828278360. The cubic root of 12216303 is about 230.3102492405.

Adding to 12216303 its reverse (30361221), we get a palindrome (42577524).

The spelling of 12216303 in words is "twelve million, two hundred sixteen thousand, three hundred three".