12221203222 has 16 divisors (see below), whose sum is σ = 18942815232. Its totient is φ = 5907341160.

The previous prime is 12221203177. The next prime is 12221203243. The reversal of 12221203222 is 22230212221.

It is a self number, because there is not a number n which added to its sum of digits gives 12221203222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41968 + ... + 161875.

It is an arithmetic number, because the mean of its divisors is an integer number (1183925952).

Almost surely, 2^12221203222 is an apocalyptic number.

12221203222 is a deficient number, since it is larger than the sum of its proper divisors (6721612010).

12221203222 is a wasteful number, since it uses less digits than its factorization.

12221203222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204843.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12221203222 its reverse (22230212221), we get a palindrome (34451415443).

The spelling of 12221203222 in words is "twelve billion, two hundred twenty-one million, two hundred three thousand, two hundred twenty-two".