12311311222 has 16 divisors (see below), whose sum is σ = 21110376960. Its totient is φ = 5274958248.

The previous prime is 12311311219. The next prime is 12311311253. The reversal of 12311311222 is 22211311321.

It is a self number, because there is not a number n which added to its sum of digits gives 12311311222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50688 + ... + 164899.

It is an arithmetic number, because the mean of its divisors is an integer number (1319398560).

Almost surely, 2^12311311222 is an apocalyptic number.

12311311222 is a deficient number, since it is larger than the sum of its proper divisors (8799065738).

12311311222 is a wasteful number, since it uses less digits than its factorization.

12311311222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219675.

The product of its digits is 144, while the sum is 19.

Adding to 12311311222 its reverse (22211311321), we get a palindrome (34522622543).

Subtracting 12311311222 from its reverse (22211311321), we obtain a palindrome (9900000099).

The spelling of 12311311222 in words is "twelve billion, three hundred eleven million, three hundred eleven thousand, two hundred twenty-two".