12011111111005 has 8 divisors (see below), whose sum is σ = 14413357173600. Its totient is φ = 9608872995216.

The previous prime is 12011111110987. The next prime is 12011111111047. The reversal of 12011111111005 is 50011111111021.

12011111111005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12011111111005 - 2¹⁵ = 12011111078237 is a prime.

It is a super-3 number, since 3×12011111111005³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 12011111111005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2104306 + ... + 5333884.

It is an arithmetic number, because the mean of its divisors is an integer number (1801669646700).

Almost surely, 2^{12011111111005} is an apocalyptic number.

It is an amenable number.

12011111111005 is a deficient number, since it is larger than the sum of its proper divisors (2402246062595).

12011111111005 is an equidigital number, since it uses as much as digits as its factorization.

12011111111005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3973403.

The product of its (nonzero) digits is 10, while the sum is 16.

Adding to 12011111111005 its sum of digits (16), we get a palindrome (12011111111021).

Adding to 12011111111005 its reverse (50011111111021), we get a palindrome (62022222222026).

The spelling of 12011111111005 in words is "twelve trillion, eleven billion, one hundred eleven million, one hundred eleven thousand, five".