123320203120 has 20 divisors (see below), whose sum is σ = 286719472440. Its totient is φ = 49328081216.

The previous prime is 123320203063. The next prime is 123320203187. The reversal of 123320203120 is 21302023321.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770751190 + ... + 770751349.

It is an arithmetic number, because the mean of its divisors is an integer number (14335973622).

Almost surely, 2^123320203120 is an apocalyptic number.

123320203120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123320203120 is an abundant number, since it is smaller than the sum of its proper divisors (163399269320).

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

123320203120 is a wasteful number, since it uses less digits than its factorization.

123320203120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541502552 (or 1541502546 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 123320203120 its reverse (21302023321), we get a palindrome (144622226441).

The spelling of 123320203120 in words is "one hundred twenty-three billion, three hundred twenty million, two hundred three thousand, one hundred twenty".