22022000020 has 24 divisors (see below), whose sum is σ = 46259222184. Its totient is φ = 8806319616.

The previous prime is 22022000017. The next prime is 22022000029. The reversal of 22022000020 is 2000022022.

It can be written as a sum of positive squares in 4 ways, for example, as 823804804 + 21198195216 = 28702^2 + 145596^2 .

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 = 22021999970 and 22022000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022000029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81369 + ... + 225088.

It is an arithmetic number, because the mean of its divisors is an integer number (1927467591).

Almost surely, 2^22022000020 is an apocalyptic number.

22022000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22022000020 is an abundant number, since it is smaller than the sum of its proper divisors (24237222164).

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

22022000020 is a wasteful number, since it uses less digits than its factorization.

22022000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310059 (or 310057 counting only the distinct ones).

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

Adding to 22022000020 its reverse (2000022022), we get a palindrome (24022022042).

The spelling of 22022000020 in words is "twenty-two billion, twenty-two million, twenty", and thus it is an aban number and an uban number.