12216543103 has 16 divisors (see below), whose sum is σ = 12932784000. Its totient is φ = 11520984832.

The previous prime is 12216543083. The next prime is 12216543121. The reversal of 12216543103 is 30134561221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12216543103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12216543133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684963 + ... + 702571.

It is an arithmetic number, because the mean of its divisors is an integer number (808299000).

Almost surely, 2^12216543103 is an apocalyptic number.

12216543103 is a deficient number, since it is larger than the sum of its proper divisors (716240897).

12216543103 is a wasteful number, since it uses less digits than its factorization.

12216543103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18194.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 12216543103 in words is "twelve billion, two hundred sixteen million, five hundred forty-three thousand, one hundred three".