2203221220 has 12 divisors (see below), whose sum is σ = 4626764604. Its totient is φ = 881288480.

The previous prime is 2203221217. The next prime is 2203221239. The reversal of 2203221220 is 221223022.

It can be written as a sum of positive squares in 2 ways, for example, as 497200804 + 1706020416 = 22298^2 + 41304^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2203221194 and 2203221203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55080511 + ... + 55080550.

It is an arithmetic number, because the mean of its divisors is an integer number (385563717).

Almost surely, 2^2203221220 is an apocalyptic number.

2203221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2203221220 is an abundant number, since it is smaller than the sum of its proper divisors (2423543384).

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

2203221220 is a wasteful number, since it uses less digits than its factorization.

2203221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110161070 (or 110161068 counting only the distinct ones).

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

The square root of 2203221220 is about 46938.4833585407. The cubic root of 2203221220 is about 1301.2259086853.

Adding to 2203221220 its reverse (221223022), we get a palindrome (2424444242).

The spelling of 2203221220 in words is "two billion, two hundred three million, two hundred twenty-one thousand, two hundred twenty".