12216043 has 18 divisors (see below), whose sum is σ = 14662908. Its totient is φ = 10145520.

The previous prime is 12216041. The next prime is 12216079. The reversal of 12216043 is 34061221.

It is not a de Polignac number, because 12216043 - 2¹ = 12216041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12216043.

It is not an unprimeable number, because it can be changed into a prime (12216041) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 182296 + ... + 182362.

It is an arithmetic number, because the mean of its divisors is an integer number (814606).

Almost surely, 2^12216043 is an apocalyptic number.

12216043 is a deficient number, since it is larger than the sum of its proper divisors (2446865).

12216043 is an frugal number, since it uses more digits than its factorization.

12216043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 12216043 is about 3495.1456335895. The cubic root of 12216043 is about 230.3086153286.

Adding to 12216043 its reverse (34061221), we get a palindrome (46277264).

The spelling of 12216043 in words is "twelve million, two hundred sixteen thousand, forty-three".