12111013840856 has 32 divisors (see below), whose sum is σ = 25952361431040. Its totient is φ = 5190396720288.

The previous prime is 12111013840819. The next prime is 12111013840859. The reversal of 12111013840856 is 65804831011121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111013840859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7804415 + ... + 9226641.

It is an arithmetic number, because the mean of its divisors is an integer number (811011294720).

Almost surely, 2^{12111013840856} is an apocalyptic number.

It is an amenable number.

12111013840856 is an abundant number, since it is smaller than the sum of its proper divisors (13841347590184).

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

12111013840856 is a wasteful number, since it uses less digits than its factorization.

12111013840856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574303 (or 1574299 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 41.

Adding to 12111013840856 its reverse (65804831011121), we get a palindrome (77915844851977).

The spelling of 12111013840856 in words is "twelve trillion, one hundred eleven billion, thirteen million, eight hundred forty thousand, eight hundred fifty-six".