220321002320 has 160 divisors (see below), whose sum is σ = 561241042560. Its totient is φ = 80103260160.

The previous prime is 220321002311. The next prime is 220321002331. The reversal of 220321002320 is 23200123022.

220321002320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5183555 + ... + 5225885.

It is an arithmetic number, because the mean of its divisors is an integer number (3507756516).

Almost surely, 2^220321002320 is an apocalyptic number.

220321002320 is a gapful number since it is divisible by the number (20) 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 220321002320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280620521280).

220321002320 is an abundant number, since it is smaller than the sum of its proper divisors (340920040240).

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

220321002320 is a wasteful number, since it uses less digits than its factorization.

220321002320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42493 (or 42487 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 220321002320 its reverse (23200123022), we get a palindrome (243521125342).

The spelling of 220321002320 in words is "two hundred twenty billion, three hundred twenty-one million, two thousand, three hundred twenty".