12111203312 has 40 divisors (see below), whose sum is σ = 25506711216. Its totient is φ = 5537534976.

The previous prime is 12111203267. The next prime is 12111203333. The reversal of 12111203312 is 21330211121.

12111203312 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 7 ways as a sum of consecutive naturals, for example, 249833 + ... + 294344.

Almost surely, 2^12111203312 is an apocalyptic number.

It is an amenable number.

12111203312 is an abundant number, since it is smaller than the sum of its proper divisors (13395507904).

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

12111203312 is a wasteful number, since it uses less digits than its factorization.

12111203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544305 (or 544299 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12111203312 its reverse (21330211121), we get a palindrome (33441414433).

The spelling of 12111203312 in words is "twelve billion, one hundred eleven million, two hundred three thousand, three hundred twelve".