12216022203 has 64 divisors (see below), whose sum is σ = 21438259200. Its totient is φ = 5994466560.

The previous prime is 12216022187. The next prime is 12216022211. The reversal of 12216022203 is 30222061221.

12216022203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12216022203 - 2⁴ = 12216022187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 12216022203.

It is not an unprimeable number, because it can be changed into a prime (12216022243) 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 63 ways as a sum of consecutive naturals, for example, 1571775 + ... + 1579527.

It is an arithmetic number, because the mean of its divisors is an integer number (334972800).

Almost surely, 2^12216022203 is an apocalyptic number.

12216022203 is a deficient number, since it is larger than the sum of its proper divisors (9222236997).

12216022203 is a wasteful number, since it uses less digits than its factorization.

12216022203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8152.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12216022203 its reverse (30222061221), we get a palindrome (42438083424).

The spelling of 12216022203 in words is "twelve billion, two hundred sixteen million, twenty-two thousand, two hundred three".