12110111112321 has 48 divisors (see below), whose sum is σ = 18176585985168. Its totient is φ = 7763045184000.

The previous prime is 12110111112317. The next prime is 12110111112347. The reversal of 12110111112321 is 12321111101121.

12110111112321 is a `hidden beast` number, since 12 + 110 + 111 + 112 + 321 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 2711373890625 + 9398737221696 = 1646625^2 + 3065736^2 .

It is not a de Polignac number, because 12110111112321 - 2² = 12110111112317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12110111112294 and 12110111112303.

It is not an unprimeable number, because it can be changed into a prime (12110111112371) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 17862675 + ... + 18528231.

It is an arithmetic number, because the mean of its divisors is an integer number (378678874691).

Almost surely, 2^{12110111112321} is an apocalyptic number.

It is an amenable number.

12110111112321 is a deficient number, since it is larger than the sum of its proper divisors (6066474872847).

12110111112321 is a wasteful number, since it uses less digits than its factorization.

12110111112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666242 (or 666239 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 18.

Adding to 12110111112321 its reverse (12321111101121), we get a palindrome (24431222213442).

The spelling of 12110111112321 in words is "twelve trillion, one hundred ten billion, one hundred eleven million, one hundred twelve thousand, three hundred twenty-one".