320221250000 has 320 divisors, whose sum is σ = 830700998400. Its totient is φ = 119232000000.

The previous prime is 320221249991. The next prime is 320221250003. The reversal of 320221250000 is 52122023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320221250003) 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, 2303749931 + ... + 2303750069.

It is an arithmetic number, because the mean of its divisors is an integer number (2595940620).

Almost surely, 2^320221250000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320221250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415350499200).

320221250000 is an abundant number, since it is smaller than the sum of its proper divisors (510479748400).

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

320221250000 is an frugal number, since it uses more digits than its factorization.

320221250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

Adding to 320221250000 its reverse (52122023), we get a palindrome (320273372023).

The spelling of 320221250000 in words is "three hundred twenty billion, two hundred twenty-one million, two hundred fifty thousand".