222222200 has 48 divisors (see below), whose sum is σ = 518940000. Its totient is φ = 88497920.

The previous prime is 222222193. The next prime is 222222227. The reversal of 222222200 is 2222222.

It is a happy number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45476 + ... + 50124.

It is an arithmetic number, because the mean of its divisors is an integer number (10811250).

Almost surely, 2^222222200 is an apocalyptic number.

222222200 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 222222200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259470000).

222222200 is an abundant number, since it is smaller than the sum of its proper divisors (296717800).

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

222222200 is a wasteful number, since it uses less digits than its factorization.

222222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4904 (or 4895 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 222222200 is about 14907.1191046426. The cubic root of 222222200 is about 605.7068440872.

Adding to 222222200 its reverse (2222222), we get a palindrome (224444422).

Multiplying 222222200 by its reverse (2222222), we get a square (493827061728400 = 22222220²).

222222200 divided by its reverse (2222222) gives a square (100 = 10²).

It can be divided in two parts, 22 and 2222200, that added together give a palindrome (2222222).

The spelling of 222222200 in words is "two hundred twenty-two million, two hundred twenty-two thousand, two hundred".