123321320000 has 280 divisors, whose sum is σ = 313138913472. Its totient is φ = 48160000000.

The previous prime is 123321319997. The next prime is 123321320021. The reversal of 123321320000 is 23123321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 491319875 + ... + 491320125.

Almost surely, 2^123321320000 is an apocalyptic number.

123321320000 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 123321320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156569456736).

123321320000 is an abundant number, since it is smaller than the sum of its proper divisors (189817593472).

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

123321320000 is an equidigital number, since it uses as much as digits as its factorization.

123321320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 123321320000 its reverse (23123321), we get a palindrome (123344443321).

The spelling of 123321320000 in words is "one hundred twenty-three billion, three hundred twenty-one million, three hundred twenty thousand".