12001110123 has 16 divisors (see below), whose sum is σ = 16396732800. Its totient is φ = 7803232320.

The previous prime is 12001110119. The next prime is 12001110157. The reversal of 12001110123 is 32101110021.

12001110123 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 12001110123 - 2² = 12001110119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12001110099 and 12001110108.

It is not an unprimeable number, because it can be changed into a prime (12001110113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451908 + ... + 477726.

It is an arithmetic number, because the mean of its divisors is an integer number (1024795800).

Almost surely, 2^12001110123 is an apocalyptic number.

12001110123 is a deficient number, since it is larger than the sum of its proper divisors (4395622677).

12001110123 is a wasteful number, since it uses less digits than its factorization.

12001110123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29642.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 12001110123 its reverse (32101110021), we get a palindrome (44102220144).

The spelling of 12001110123 in words is "twelve billion, one million, one hundred ten thousand, one hundred twenty-three".