20002200020 has 96 divisors (see below), whose sum is σ = 46795142016. Its totient is φ = 7120742400.

The previous prime is 20002200019. The next prime is 20002200047. The reversal of 20002200020 is 2000220002.

It is a junction number, because it is equal to n+sod(n) for n = 20002199980 and 20002200007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2195675 + ... + 2204765.

It is an arithmetic number, because the mean of its divisors is an integer number (487449396).

Almost surely, 2^20002200020 is an apocalyptic number.

20002200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20002200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23397571008).

20002200020 is an abundant number, since it is smaller than the sum of its proper divisors (26792941996).

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

20002200020 is a wasteful number, since it uses less digits than its factorization.

20002200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9321 (or 9319 counting only the distinct ones).

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

Adding to 20002200020 its reverse (2000220002), we get a palindrome (22002420022).

It can be divided in two parts, 20002 and 200020, that added together give a palindrome (220022).

The spelling of 20002200020 in words is "twenty billion, two million, two hundred thousand, twenty".