422021222 has 24 divisors (see below), whose sum is σ = 738289080. Its totient is φ = 180398400.

The previous prime is 422021207. The next prime is 422021233. The reversal of 422021222 is 222120224.

It is a self number, because there is not a number n which added to its sum of digits gives 422021222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33929 + ... + 44667.

It is an arithmetic number, because the mean of its divisors is an integer number (30762045).

Almost surely, 2^422021222 is an apocalyptic number.

422021222 is a deficient number, since it is larger than the sum of its proper divisors (316267858).

422021222 is a wasteful number, since it uses less digits than its factorization.

422021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11156 (or 11149 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 422021222 is about 20543.1551130784. The cubic root of 422021222 is about 750.0866400650.

Adding to 422021222 its reverse (222120224), we get a palindrome (644141446).

The spelling of 422021222 in words is "four hundred twenty-two million, twenty-one thousand, two hundred twenty-two".