22020000020 has 24 divisors (see below), whose sum is σ = 46262262984. Its totient is φ = 8804140416.

The previous prime is 22020000017. The next prime is 22020000043. The reversal of 22020000020 is 2000002022.

It can be written as a sum of positive squares in 4 ways, for example, as 1558986256 + 20461013764 = 39484^2 + 143042^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22019999962 and 22020000007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194219 + ... + 285938.

It is an arithmetic number, because the mean of its divisors is an integer number (1927594291).

Almost surely, 2^22020000020 is an apocalyptic number.

22020000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020000020 is an abundant number, since it is smaller than the sum of its proper divisors (24242262964).

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

22020000020 is a wasteful number, since it uses less digits than its factorization.

22020000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482459 (or 482457 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

Adding to 22020000020 its reverse (2000002022), we get a palindrome (24020002042).

The spelling of 22020000020 in words is "twenty-two billion, twenty million, twenty", and thus it is an aban number and an uban number.