422117220 has 48 divisors (see below), whose sum is σ = 1350776448. Its totient is φ = 96483840.

The previous prime is 422117209. The next prime is 422117233. The reversal of 422117220 is 22711224.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502101 + ... + 502940.

It is an arithmetic number, because the mean of its divisors is an integer number (28141176).

Almost surely, 2^422117220 is an apocalyptic number.

It is an amenable number.

422117220 is an abundant number, since it is smaller than the sum of its proper divisors (928659228).

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

422117220 is a wasteful number, since it uses less digits than its factorization.

422117220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005060 (or 1005058 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 422117220 is about 20545.4914762339. The cubic root of 422117220 is about 750.1435103157.

Adding to 422117220 its reverse (22711224), we get a palindrome (444828444).

The spelling of 422117220 in words is "four hundred twenty-two million, one hundred seventeen thousand, two hundred twenty".