4225212222 has 64 divisors (see below), whose sum is σ = 10547311104. Its totient is φ = 1096237440.

The previous prime is 4225212209. The next prime is 4225212247. The reversal of 4225212222 is 2222125224.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4225212192 and 4225212201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 456028 + ... + 465200.

It is an arithmetic number, because the mean of its divisors is an integer number (164801736).

Almost surely, 2^4225212222 is an apocalyptic number.

4225212222 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 4225212222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5273655552).

4225212222 is an abundant number, since it is smaller than the sum of its proper divisors (6322098882).

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

4225212222 is a wasteful number, since it uses less digits than its factorization.

4225212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10193.

The product of its digits is 2560, while the sum is 24.

The square root of 4225212222 is about 65001.6324564237. The cubic root of 4225212222 is about 1616.6506298240.

Adding to 4225212222 its reverse (2222125224), we get a palindrome (6447337446).

The spelling of 4225212222 in words is "four billion, two hundred twenty-five million, two hundred twelve thousand, two hundred twenty-two".