422116220 has 12 divisors (see below), whose sum is σ = 886444104. Its totient is φ = 168846480.

The previous prime is 422116183. The next prime is 422116223. The reversal of 422116220 is 22611224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 21105811 = 422116220 / (4 + 2 + 2 + 1 + 1 + 6 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 422116192 and 422116201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422116223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10552886 + ... + 10552925.

It is an arithmetic number, because the mean of its divisors is an integer number (73870342).

Almost surely, 2^422116220 is an apocalyptic number.

It is an amenable number.

422116220 is an abundant number, since it is smaller than the sum of its proper divisors (464327884).

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

422116220 is a wasteful number, since it uses less digits than its factorization.

422116220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21105820 (or 21105818 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 422116220 is about 20545.4671399800. The cubic root of 422116220 is about 750.1429179494.

Adding to 422116220 its reverse (22611224), we get a palindrome (444727444).

The spelling of 422116220 in words is "four hundred twenty-two million, one hundred sixteen thousand, two hundred twenty".