22020004004 has 6 divisors (see below), whose sum is σ = 38535007014. Its totient is φ = 11010002000.

The previous prime is 22020004003. The next prime is 22020004049. The reversal of 22020004004 is 40040002022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18580416100 + 3439587904 = 136310^2 + 58648^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22020004004.

It is not an unprimeable number, because it can be changed into a prime (22020004003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752500497 + ... + 2752500504.

It is an arithmetic number, because the mean of its divisors is an integer number (6422501169).

Almost surely, 2^22020004004 is an apocalyptic number.

It is an amenable number.

22020004004 is a deficient number, since it is larger than the sum of its proper divisors (16515003010).

22020004004 is a wasteful number, since it uses less digits than its factorization.

22020004004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505001005 (or 5505001003 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 22020004004 its reverse (40040002022), we get a palindrome (62060006026).

The spelling of 22020004004 in words is "twenty-two billion, twenty million, four thousand, four".