12111201110121 has 16 divisors (see below), whose sum is σ = 17560278877824. Its totient is φ = 7393801630464.

The previous prime is 12111201110089. The next prime is 12111201110191. The reversal of 12111201110121 is 12101110211121.

12111201110121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12111201110121 - 2⁵ = 12111201110089 is a prime.

It is a super-2 number, since 2×12111201110121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12111201110121.

It is not an unprimeable number, because it can be changed into a prime (12111201110191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3209113405 + ... + 3209117178.

It is an arithmetic number, because the mean of its divisors is an integer number (1097517429864).

Almost surely, 2^{12111201110121} is an apocalyptic number.

It is an amenable number.

12111201110121 is a deficient number, since it is larger than the sum of its proper divisors (5449077767703).

12111201110121 is a wasteful number, since it uses less digits than its factorization.

12111201110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6418230640.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12111201110121 its reverse (12101110211121), we get a palindrome (24212311321242).

The spelling of 12111201110121 in words is "twelve trillion, one hundred eleven billion, two hundred one million, one hundred ten thousand, one hundred twenty-one".