320122200000 has 336 divisors, whose sum is σ = 1076732334720. Its totient is φ = 83909760000.

The previous prime is 320122199989. The next prime is 320122200077. The reversal of 320122200000 is 2221023.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35395479 + ... + 35404521.

It is an arithmetic number, because the mean of its divisors is an integer number (3204560520).

Almost surely, 2^320122200000 is an apocalyptic number.

320122200000 is a gapful number since it is divisible by the number (30) 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 320122200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538366167360).

320122200000 is an abundant number, since it is smaller than the sum of its proper divisors (756610134720).

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

320122200000 is an frugal number, since it uses more digits than its factorization.

320122200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9142 (or 9112 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 320122200000 its reverse (2221023), we get a palindrome (320124421023).

The spelling of 320122200000 in words is "three hundred twenty billion, one hundred twenty-two million, two hundred thousand".