12111020321103 has 64 divisors (see below), whose sum is σ = 19784482099200. Its totient is φ = 7260915271680.

The previous prime is 12111020321093. The next prime is 12111020321111. The reversal of 12111020321103 is 30112302011121.

12111020321103 is a `hidden beast` number, since 1 + 211 + 10 + 20 + 321 + 103 = 666.

It is not a de Polignac number, because 12111020321103 - 2¹⁸ = 12111020058959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111020321123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61639603 + ... + 61835771.

It is an arithmetic number, because the mean of its divisors is an integer number (309132532800).

Almost surely, 2^{12111020321103} is an apocalyptic number.

12111020321103 is a deficient number, since it is larger than the sum of its proper divisors (7673461778097).

12111020321103 is a wasteful number, since it uses less digits than its factorization.

12111020321103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198429 (or 198423 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 12111020321103 its reverse (30112302011121), we get a palindrome (42223322332224).

The spelling of 12111020321103 in words is "twelve trillion, one hundred eleven billion, twenty million, three hundred twenty-one thousand, one hundred three".