2230221220 has 96 divisors (see below), whose sum is σ = 5219665920. Its totient is φ = 797153280.

The previous prime is 2230221209. The next prime is 2230221221. The reversal of 2230221220 is 221220322.

2230221220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2230221194 and 2230221203.

It is not an unprimeable number, because it can be changed into a prime (2230221221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 410844 + ... + 416236.

It is an arithmetic number, because the mean of its divisors is an integer number (54371520).

Almost surely, 2^2230221220 is an apocalyptic number.

2230221220 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 2230221220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2609832960).

2230221220 is an abundant number, since it is smaller than the sum of its proper divisors (2989444700).

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

2230221220 is a wasteful number, since it uses less digits than its factorization.

2230221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5485 (or 5483 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2230221220 is about 47225.2180513759. The cubic root of 2230221220 is about 1306.5197563499.

Adding to 2230221220 its reverse (221220322), we get a palindrome (2451441542).

The spelling of 2230221220 in words is "two billion, two hundred thirty million, two hundred twenty-one thousand, two hundred twenty".