22002210 has 48 divisors (see below), whose sum is σ = 57620160. Its totient is φ = 5824800.

The previous prime is 22002203. The next prime is 22002217. The reversal of 22002210 is 1220022.

It is an interprime number because it is at equal distance from previous prime (22002203) and next prime (22002217).

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22002192 and 22002201.

It is not an unprimeable number, because it can be changed into a prime (22002217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12781 + ... + 14399.

It is an arithmetic number, because the mean of its divisors is an integer number (1200420).

Almost surely, 2^22002210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22002210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28810080).

22002210 is an abundant number, since it is smaller than the sum of its proper divisors (35617950).

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

22002210 is a wasteful number, since it uses less digits than its factorization.

22002210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783 (or 1780 counting only the distinct ones).

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

The square root of 22002210 is about 4690.6513406989. The cubic root of 22002210 is about 280.2133153376.

Adding to 22002210 its reverse (1220022), we get a palindrome (23222232).

The spelling of 22002210 in words is "twenty-two million, two thousand, two hundred ten".