22004442020 has 24 divisors (see below), whose sum is σ = 50410176768. Its totient is φ = 8001615200.

The previous prime is 22004442011. The next prime is 22004442059. The reversal of 22004442020 is 2024440022.

It is a super-2 number, since 2×22004442020² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22004441983 and 22004442001.

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, 50009876 + ... + 50010315.

It is an arithmetic number, because the mean of its divisors is an integer number (2100424032).

Almost surely, 2^22004442020 is an apocalyptic number.

22004442020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22004442020 is an abundant number, since it is smaller than the sum of its proper divisors (28405734748).

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

22004442020 is a wasteful number, since it uses less digits than its factorization.

22004442020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100020211 (or 100020209 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 22004442020 its reverse (2024440022), we get a palindrome (24028882042).

The spelling of 22004442020 in words is "twenty-two billion, four million, four hundred forty-two thousand, twenty".