11221002 has 48 divisors (see below), whose sum is σ = 26557440.
Its totient is φ = 3403296.
The previous prime is 11220997. The next prime is 11221009. The reversal of 11221002 is 20012211.
11221002 = T493 + T494 + ... +
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (11221009) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18183 + ... + 18789.
It is an arithmetic number, because the mean of its divisors is an integer number (553280).
Almost surely, 211221002 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 11221002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13278720).
11221002 is an abundant number, since it is smaller than the sum of its proper divisors (15336438).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11221002 is a wasteful number, since it uses less digits than its factorization.
11221002 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 707 (or 704 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 9.
The square root of 11221002 is about 3349.7764104489.
The cubic root of 11221002 is about 223.8775505285.
Adding to 11221002 its reverse (20012211), we get a palindrome (31233213).
The spelling of 11221002 in words is "eleven million, two hundred twenty-one thousand, two".