12111201212 has 72 divisors (see below), whose sum is σ = 24192966000. Its totient is φ = 5294741760.

The previous prime is 12111201209. The next prime is 12111201253. The reversal of 12111201212 is 21210211121.

12111201212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3970664 + ... + 3973712.

Almost surely, 2^12111201212 is an apocalyptic number.

It is an amenable number.

12111201212 is a deficient number, since it is larger than the sum of its proper divisors (12081764788).

12111201212 is a wasteful number, since it uses less digits than its factorization.

12111201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387 (or 3374 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12111201212 its reverse (21210211121), we get a palindrome (33321412333).

Subtracting 12111201212 from its reverse (21210211121), we obtain a palindrome (9099009909).

The spelling of 12111201212 in words is "twelve billion, one hundred eleven million, two hundred one thousand, two hundred twelve".