12123043111100 has 18 divisors (see below), whose sum is σ = 26307003551304. Its totient is φ = 4849217244400.

The previous prime is 12123043111099. The next prime is 12123043111133. The reversal of 12123043111100 is 111134032121.

12123043111100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60615215456 + ... + 60615215655.

Almost surely, 2^{12123043111100} is an apocalyptic number.

12123043111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123043111100 is an abundant number, since it is smaller than the sum of its proper divisors (14183960440204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123043111100 is a wasteful number, since it uses less digits than its factorization.

12123043111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121230431125 (or 121230431118 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12123043111100 its reverse (111134032121), we get a palindrome (12234177143221).

The spelling of 12123043111100 in words is "twelve trillion, one hundred twenty-three billion, forty-three million, one hundred eleven thousand, one hundred".