422166222522 has 96 divisors (see below), whose sum is σ = 1030129663680. Its totient is φ = 123826268160.

The previous prime is 422166222503. The next prime is 422166222529. The reversal of 422166222522 is 225222661224.

422166222522 is a `hidden beast` number, since 4 + 2 + 2 + 1 + 6 + 622 + 2 + 5 + 22 = 666.

It is not an unprimeable number, because it can be changed into a prime (422166222529) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1264629 + ... + 1563207.

It is an arithmetic number, because the mean of its divisors is an integer number (10730517330).

Almost surely, 2^422166222522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422166222522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515064831840).

422166222522 is an abundant number, since it is smaller than the sum of its proper divisors (607963441158).

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

422166222522 is a wasteful number, since it uses less digits than its factorization.

422166222522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298828 (or 298825 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

Adding to 422166222522 its reverse (225222661224), we get a palindrome (647388883746).

The spelling of 422166222522 in words is "four hundred twenty-two billion, one hundred sixty-six million, two hundred twenty-two thousand, five hundred twenty-two".