204201322220 has 48 divisors (see below), whose sum is σ = 490156349760. Its totient is φ = 70001428224.

The previous prime is 204201322207. The next prime is 204201322223. The reversal of 204201322220 is 22223102402.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 204201322192 and 204201322201.

It is not an unprimeable number, because it can be changed into a prime (204201322223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 862946 + ... + 1073814.

It is an arithmetic number, because the mean of its divisors is an integer number (10211590620).

Almost surely, 2^204201322220 is an apocalyptic number.

204201322220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204201322220 is an abundant number, since it is smaller than the sum of its proper divisors (285955027540).

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

204201322220 is a wasteful number, since it uses less digits than its factorization.

204201322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217802 (or 217800 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 204201322220 its reverse (22223102402), we get a palindrome (226424424622).

The spelling of 204201322220 in words is "two hundred four billion, two hundred one million, three hundred twenty-two thousand, two hundred twenty".