12012111111112 has 64 divisors (see below), whose sum is σ = 25961723965440. Its totient is φ = 5103809222400.

The previous prime is 12012111111089. The next prime is 12012111111137. The reversal of 12012111111112 is 21111111121021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9210162 + ... + 10433182.

It is an arithmetic number, because the mean of its divisors is an integer number (405651936960).

Almost surely, 2^{12012111111112} is an apocalyptic number.

It is an amenable number.

12012111111112 is an abundant number, since it is smaller than the sum of its proper divisors (13949612854328).

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

12012111111112 is a wasteful number, since it uses less digits than its factorization.

12012111111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224542 (or 1224538 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 12012111111112 its reverse (21111111121021), we get a palindrome (33123222232133).

Subtracting 12012111111112 from its reverse (21111111121021), we obtain a palindrome (9099000009909).

The spelling of 12012111111112 in words is "twelve trillion, twelve billion, one hundred eleven million, one hundred eleven thousand, one hundred twelve".