2221110220 has 192 divisors, whose sum is σ = 5715360000. Its totient is φ = 724039680.

The previous prime is 2221110217. The next prime is 2221110247. The reversal of 2221110220 is 220111222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221110220.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14906706 + ... + 14906854.

It is an arithmetic number, because the mean of its divisors is an integer number (29767500).

Almost surely, 2^2221110220 is an apocalyptic number.

2221110220 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 2221110220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2857680000).

2221110220 is an abundant number, since it is smaller than the sum of its proper divisors (3494249780).

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

2221110220 is a wasteful number, since it uses less digits than its factorization.

2221110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2221110220 is about 47128.6560385505. The cubic root of 2221110220 is about 1304.7381769967.

Adding to 2221110220 its reverse (220111222), we get a palindrome (2441221442).

The spelling of 2221110220 in words is "two billion, two hundred twenty-one million, one hundred ten thousand, two hundred twenty".