It is a happy number.
It is a self number, because there is not a number n which added to its sum of digits gives 1001022.
It is a congruent number.
21001022 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1001022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1131840).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1001022 is a wasteful number, since it uses less digits than its factorization.
1001022 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 568.
The square root of 1001022 is about 1000.5108695062. The cubic root of 1001022 is about 100.0340550679.
Adding to 1001022 its reverse (2201001), we get a palindrome (3202023).
The spelling of 1001022 in words is "one million, one thousand, twenty-two".