12011303103312 has 80 divisors (see below), whose sum is σ = 31696795775232. Its totient is φ = 3917666058240.

The previous prime is 12011303103269. The next prime is 12011303103337. The reversal of 12011303103312 is 21330130311021.

It is a happy number.

12011303103312 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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9074512 + ... + 10313552.

Almost surely, 2^{12011303103312} is an apocalyptic number.

12011303103312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011303103312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15848397887616).

12011303103312 is an abundant number, since it is smaller than the sum of its proper divisors (19685492671920).

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

12011303103312 is a wasteful number, since it uses less digits than its factorization.

12011303103312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243396 (or 1243390 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 12011303103312 its reverse (21330130311021), we get a palindrome (33341433414333).

The spelling of 12011303103312 in words is "twelve trillion, eleven billion, three hundred three million, one hundred three thousand, three hundred twelve".