22020020020 has 12 divisors (see below), whose sum is σ = 46242042084. Its totient is φ = 8808008000.

The previous prime is 22020019951. The next prime is 22020020021. The reversal of 22020020020 is 2002002022.

It can be written as a sum of positive squares in 2 ways, for example, as 17295932196 + 4724087824 = 131514^2 + 68732^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 22020019979 and 22020020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020020021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550500481 + ... + 550500520.

It is an arithmetic number, because the mean of its divisors is an integer number (3853503507).

Almost surely, 2^22020020020 is an apocalyptic number.

22020020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020020020 is an abundant number, since it is smaller than the sum of its proper divisors (24222022064).

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

22020020020 is a wasteful number, since it uses less digits than its factorization.

22020020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101001010 (or 1101001008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

Adding to 22020020020 its reverse (2002002022), we get a palindrome (24022022042).

The spelling of 22020020020 in words is "twenty-two billion, twenty million, twenty thousand, twenty".