22220222020 has 12 divisors (see below), whose sum is σ = 46662466284. Its totient is φ = 8888088800.

The previous prime is 22220222009. The next prime is 22220222023. The reversal of 22220222020 is 2022202222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8053985536 + 14166236484 = 89744^2 + 119022^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22220221985 and 22220222003.

It is not an unprimeable number, because it can be changed into a prime (22220222023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555505531 + ... + 555505570.

It is an arithmetic number, because the mean of its divisors is an integer number (3888538857).

Almost surely, 2^22220222020 is an apocalyptic number.

22220222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220222020 is an abundant number, since it is smaller than the sum of its proper divisors (24442244264).

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

22220222020 is a wasteful number, since it uses less digits than its factorization.

22220222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111011110 (or 1111011108 counting only the distinct ones).

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

Adding to 22220222020 its reverse (2022202222), we get a palindrome (24242424242).

The spelling of 22220222020 in words is "twenty-two billion, two hundred twenty million, two hundred twenty-two thousand, twenty".