422212122 has 32 divisors (see below), whose sum is σ = 939202560. Its totient is φ = 140594400.

The previous prime is 422212099. The next prime is 422212123. The reversal of 422212122 is 221212224.

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 = 422212095 and 422212104.

It is not an unprimeable number, because it can be changed into a prime (422212123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 58758 + ... + 65550.

It is an arithmetic number, because the mean of its divisors is an integer number (29350080).

Almost surely, 2^422212122 is an apocalyptic number.

422212122 is an abundant number, since it is smaller than the sum of its proper divisors (516990438).

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

422212122 is a wasteful number, since it uses less digits than its factorization.

422212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7955 (or 7949 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 422212122 is about 20547.8009042330. The cubic root of 422212122 is about 750.1997228097.

Adding to 422212122 its reverse (221212224), we get a palindrome (643424346).

The spelling of 422212122 in words is "four hundred twenty-two million, two hundred twelve thousand, one hundred twenty-two".