120320001321000 has 256 divisors, whose sum is σ = 404875998858240. Its totient is φ = 29573216870400.

The previous prime is 120320001320971. The next prime is 120320001321007. The reversal of 120320001321000 is 123100023021.

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 (120320001321007) 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, 23954929 + ... + 28539071.

It is an arithmetic number, because the mean of its divisors is an integer number (1581546870540).

Almost surely, 2^{120320001321000} is an apocalyptic number.

120320001321000 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 120320001321000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202437999429120).

120320001321000 is an abundant number, since it is smaller than the sum of its proper divisors (284555997537240).

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

120320001321000 is a wasteful number, since it uses less digits than its factorization.

120320001321000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4584853 (or 4584839 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 120320001321000 its reverse (123100023021), we get a palindrome (120443101344021).

The spelling of 120320001321000 in words is "one hundred twenty trillion, three hundred twenty billion, one million, three hundred twenty-one thousand".