12211213222 has 32 divisors (see below), whose sum is σ = 21293254080. Its totient is φ = 5205002880.

The previous prime is 12211213207. The next prime is 12211213243. The reversal of 12211213222 is 22231211221.

It is a super-2 number, since 2×12211213222² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12211213222.

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 15 ways as a sum of consecutive naturals, for example, 334729 + ... + 369412.

It is an arithmetic number, because the mean of its divisors is an integer number (665414190).

Almost surely, 2^12211213222 is an apocalyptic number.

12211213222 is a deficient number, since it is larger than the sum of its proper divisors (9082040858).

12211213222 is a wasteful number, since it uses less digits than its factorization.

12211213222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704208.

The product of its digits is 192, while the sum is 19.

Adding to 12211213222 its reverse (22231211221), we get a palindrome (34442424443).

The spelling of 12211213222 in words is "twelve billion, two hundred eleven million, two hundred thirteen thousand, two hundred twenty-two".