2222220220 has 48 divisors (see below), whose sum is σ = 5209319808. Its totient is φ = 789284160.

The previous prime is 2222220211. The next prime is 2222220223. The reversal of 2222220220 is 220222222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2222220194 and 2222220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222220223) 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, 107994 + ... + 126913.

It is an arithmetic number, because the mean of its divisors is an integer number (108527496).

Almost surely, 2^2222220220 is an apocalyptic number.

2222220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222220220 is an abundant number, since it is smaller than the sum of its proper divisors (2987099588).

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

2222220220 is a wasteful number, since it uses less digits than its factorization.

2222220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234970 (or 234968 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 2222220220 is about 47140.4308423247. The cubic root of 2222220220 is about 1304.9554884678.

Adding to 2222220220 its reverse (220222222), we get a palindrome (2442442442).

It can be divided in two parts, 22222202 and 20, that added together give a palindrome (22222222).

The spelling of 2222220220 in words is "two billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twenty".