222210000 has 200 divisors, whose sum is σ = 797994560. Its totient is φ = 59184000.

The previous prime is 222209983. The next prime is 222210013. The reversal of 222210000 is 12222.

It is a tau number, because it is divible by the number of its divisors (200).

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

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 269589 + ... + 270411.

Almost surely, 2^222210000 is an apocalyptic number.

222210000 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 222210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398997280).

222210000 is an abundant number, since it is smaller than the sum of its proper divisors (575784560).

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

222210000 is an equidigital number, since it uses as much as digits as its factorization.

222210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 833 counting only the distinct ones).

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

The square root of 222210000 is about 14906.7098985658. The cubic root of 222210000 is about 605.6957594479.

Adding to 222210000 its reverse (12222), we get a palindrome (222222222).

The spelling of 222210000 in words is "two hundred twenty-two million, two hundred ten thousand".