123203200120 has 256 divisors, whose sum is σ = 372721305600. Its totient is φ = 35396904960.

The previous prime is 123203200027. The next prime is 123203200123. The reversal of 123203200120 is 21002302321.

It is a junction number, because it is equal to n+sod(n) for n = 123203200094 and 123203200103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123203200123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35513746 + ... + 35517214.

It is an arithmetic number, because the mean of its divisors is an integer number (1455942600).

Almost surely, 2^123203200120 is an apocalyptic number.

123203200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123203200120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186360652800).

123203200120 is an abundant number, since it is smaller than the sum of its proper divisors (249518105480).

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

123203200120 is a wasteful number, since it uses less digits than its factorization.

123203200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4398 (or 4394 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 123203200120 its reverse (21002302321), we get a palindrome (144205502441).

It can be divided in two parts, 123203 and 200120, that added together give a palindrome (323323).

The spelling of 123203200120 in words is "one hundred twenty-three billion, two hundred three million, two hundred thousand, one hundred twenty".