123110111100 has 72 divisors (see below), whose sum is σ = 365825609968. Its totient is φ = 31942080000.

The previous prime is 123110111093. The next prime is 123110111129. The reversal of 123110111100 is 1111011321.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5534401 + ... + 5556600.

Almost surely, 2^123110111100 is an apocalyptic number.

123110111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123110111100 is an abundant number, since it is smaller than the sum of its proper divisors (242715498868).

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

123110111100 is a wasteful number, since it uses less digits than its factorization.

123110111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11091055 (or 11091048 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 123110111100 its reverse (1111011321), we get a palindrome (124221122421).

The spelling of 123110111100 in words is "one hundred twenty-three billion, one hundred ten million, one hundred eleven thousand, one hundred".