22002200 has 96 divisors (see below), whose sum is σ = 56982960. Its totient is φ = 7833600.

The previous prime is 22002187. The next prime is 22002203. The reversal of 22002200 is 220022.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002203) 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, 160532 + ... + 160668.

Almost surely, 2^22002200 is an apocalyptic number.

22002200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22002200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28491480).

22002200 is an abundant number, since it is smaller than the sum of its proper divisors (34980760).

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

22002200 is a wasteful number, since it uses less digits than its factorization.

22002200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 22002200 is about 4690.6502747487. The cubic root of 22002200 is about 280.2132728853.

Adding to 22002200 its reverse (220022), we get a palindrome (22222222).

Multiplying 22002200 by its reverse (220022), we get a square (4840968048400 = 2200220²).

22002200 divided by its reverse (220022) gives a square (100 = 10²).

The spelling of 22002200 in words is "twenty-two million, two thousand, two hundred".