422000204220 has 288 divisors, whose sum is σ = 1516114454400. Its totient is φ = 92962824192.

The previous prime is 422000204207. The next prime is 422000204257. The reversal of 422000204220 is 22402000224.

422000204220 is a `hidden beast` number, since 4 + 220 + 0 + 0 + 20 + 422 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 422000204193 and 422000204202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20781112 + ... + 20801408.

It is an arithmetic number, because the mean of its divisors is an integer number (5264286300).

Almost surely, 2^422000204220 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 422000204220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (758057227200).

422000204220 is an abundant number, since it is smaller than the sum of its proper divisors (1094114250180).

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

422000204220 is a wasteful number, since it uses less digits than its factorization.

422000204220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20917 (or 20912 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 422000204220 its reverse (22402000224), we get a palindrome (444402204444).

The spelling of 422000204220 in words is "four hundred twenty-two billion, two hundred four thousand, two hundred twenty".