220222000 has 80 divisors (see below), whose sum is σ = 536796000. Its totient is φ = 87379200.

The previous prime is 220221997. The next prime is 220222001. The reversal of 220222000 is 222022.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (220222001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297631 + ... + 298369.

It is an arithmetic number, because the mean of its divisors is an integer number (6709950).

Almost surely, 2^220222000 is an apocalyptic number.

220222000 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 220222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268398000).

220222000 is an abundant number, since it is smaller than the sum of its proper divisors (316574000).

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

220222000 is a wasteful number, since it uses less digits than its factorization.

220222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 220222000 is about 14839.8787057038. The cubic root of 220222000 is about 603.8840617784.

Adding to 220222000 its reverse (222022), we get a palindrome (220444022).

The spelling of 220222000 in words is "two hundred twenty million, two hundred twenty-two thousand".