822221568 has 162 divisors, whose sum is σ = 2758093884. Its totient is φ = 234888192.

The previous prime is 822221563. The next prime is 822221573. The reversal of 822221568 is 865122228.

It is an interprime number because it is at equal distance from previous prime (822221563) and next prime (822221573).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (822221563) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 109255 + ... + 116537.

Almost surely, 2^822221568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 822221568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1379046942).

822221568 is an abundant number, since it is smaller than the sum of its proper divisors (1935872316).

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

822221568 is a wasteful number, since it uses less digits than its factorization.

822221568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7319 (or 7295 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 822221568 is about 28674.4061490382. The cubic root of 822221568 is about 936.8346707645.

The spelling of 822221568 in words is "eight hundred twenty-two million, two hundred twenty-one thousand, five hundred sixty-eight".