22102002 has 48 divisors (see below), whose sum is σ = 53366040. Its totient is φ = 6564096.

The previous prime is 22101979. The next prime is 22102013. The reversal of 22102002 is 20020122.

It can be written as a sum of positive squares in 4 ways, for example, as 19105641 + 2996361 = 4371^2 + 1731^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5158 + ... + 8414.

Almost surely, 2^22102002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22102002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26683020).

22102002 is an abundant number, since it is smaller than the sum of its proper divisors (31264038).

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

22102002 is a wasteful number, since it uses less digits than its factorization.

22102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3307 (or 3304 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 22102002 is about 4701.2766351280. The cubic root of 22102002 is about 280.6363164435.

Adding to 22102002 its reverse (20020122), we get a palindrome (42122124).

The spelling of 22102002 in words is "twenty-two million, one hundred two thousand, two".