22020004420 has 24 divisors (see below), whose sum is σ = 46761586200. Its totient is φ = 8709034752.

The previous prime is 22020004417. The next prime is 22020004427. The reversal of 22020004420 is 2440002022.

It can be written as a sum of positive squares in 4 ways, for example, as 212984836 + 21807019584 = 14594^2 + 147672^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22020004394 and 22020004403.

It is not an unprimeable number, because it can be changed into a prime (22020004427) 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, 6183615 + ... + 6187174.

It is an arithmetic number, because the mean of its divisors is an integer number (1948399425).

Almost surely, 2^22020004420 is an apocalyptic number.

22020004420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020004420 is an abundant number, since it is smaller than the sum of its proper divisors (24741581780).

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

22020004420 is a wasteful number, since it uses less digits than its factorization.

22020004420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12370887 (or 12370885 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 22020004420 its reverse (2440002022), we get a palindrome (24460006442).

The spelling of 22020004420 in words is "twenty-two billion, twenty million, four thousand, four hundred twenty".