22002200020 has 36 divisors (see below), whose sum is σ = 49082429340. Its totient is φ = 8283179008.

The previous prime is 22002200009. The next prime is 22002200021. The reversal of 22002200020 is 2000220022.

It can be written as a sum of positive squares in 6 ways, for example, as 1331812036 + 20670387984 = 36494^2 + 143772^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002200021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1897525 + ... + 1909084.

It is an arithmetic number, because the mean of its divisors is an integer number (1363400815).

Almost surely, 2^22002200020 is an apocalyptic number.

22002200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22002200020 is an abundant number, since it is smaller than the sum of its proper divisors (27080229320).

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

22002200020 is a wasteful number, since it uses less digits than its factorization.

22002200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806652 (or 3806633 counting only the distinct ones).

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

Adding to 22002200020 its reverse (2000220022), we get a palindrome (24002420042).

The spelling of 22002200020 in words is "twenty-two billion, two million, two hundred thousand, twenty".