123320202000 has 160 divisors (see below), whose sum is σ = 401234021760. Its totient is φ = 32583513600.

The previous prime is 123320201971. The next prime is 123320202007. The reversal of 123320202000 is 202023321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (123320202007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 559719 + ... + 748281.

It is an arithmetic number, because the mean of its divisors is an integer number (2507712636).

Almost surely, 2^123320202000 is an apocalyptic number.

123320202000 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 123320202000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200617010880).

123320202000 is an abundant number, since it is smaller than the sum of its proper divisors (277913819760).

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

123320202000 is a wasteful number, since it uses less digits than its factorization.

123320202000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188698 (or 188682 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 123320202000 its reverse (202023321), we get a palindrome (123522225321).

The spelling of 123320202000 in words is "one hundred twenty-three billion, three hundred twenty million, two hundred two thousand".