123003312120 has 96 divisors (see below), whose sum is σ = 430511608800. Its totient is φ = 30277737216.

The previous prime is 123003312083. The next prime is 123003312137. The reversal of 123003312120 is 21213300321.

123003312120 is a `hidden beast` number, since 1 + 230 + 0 + 3 + 312 + 120 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 123003312093 and 123003312102.

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, 13136700 + ... + 13146059.

It is an arithmetic number, because the mean of its divisors is an integer number (4484495925).

Almost surely, 2^123003312120 is an apocalyptic number.

123003312120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123003312120 is an abundant number, since it is smaller than the sum of its proper divisors (307508296680).

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

123003312120 is a wasteful number, since it uses less digits than its factorization.

123003312120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26282789 (or 26282782 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123003312120 its reverse (21213300321), we get a palindrome (144216612441).

The spelling of 123003312120 in words is "one hundred twenty-three billion, three million, three hundred twelve thousand, one hundred twenty".