12221100222 has 16 divisors (see below), whose sum is σ = 25102800912. Its totient is φ = 3963600000.

The previous prime is 12221100217. The next prime is 12221100263. The reversal of 12221100222 is 22200112221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27524779 + ... + 27525222.

It is an arithmetic number, because the mean of its divisors is an integer number (1568925057).

Almost surely, 2^12221100222 is an apocalyptic number.

12221100222 is an abundant number, since it is smaller than the sum of its proper divisors (12881700690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12221100222 is a wasteful number, since it uses less digits than its factorization.

12221100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55050043.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12221100222 its reverse (22200112221), we get a palindrome (34421212443).

The spelling of 12221100222 in words is "twelve billion, two hundred twenty-one million, one hundred thousand, two hundred twenty-two".