12211313212 has 24 divisors (see below), whose sum is σ = 24568879104. Its totient is φ = 5202080112.

The previous prime is 12211313209. The next prime is 12211313251. The reversal of 12211313212 is 21231311221.

It is a self number, because there is not a number n which added to its sum of digits gives 12211313212.

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, 1301068 + ... + 1310419.

It is an arithmetic number, because the mean of its divisors is an integer number (1023703296).

Almost surely, 2^12211313212 is an apocalyptic number.

It is an amenable number.

12211313212 is an abundant number, since it is smaller than the sum of its proper divisors (12357565892).

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

12211313212 is a wasteful number, since it uses less digits than its factorization.

12211313212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611665 (or 2611663 counting only the distinct ones).

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

Adding to 12211313212 its reverse (21231311221), we get a palindrome (33442624433).

The spelling of 12211313212 in words is "twelve billion, two hundred eleven million, three hundred thirteen thousand, two hundred twelve".