22220204212 has 12 divisors (see below), whose sum is σ = 41172731460. Its totient is φ = 10456566656.

The previous prime is 22220204197. The next prime is 22220204267. The reversal of 22220204212 is 21240202222.

It can be written as a sum of positive squares in 2 ways, for example, as 10754934436 + 11465269776 = 103706^2 + 107076^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22220204212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163383787 + ... + 163383922.

It is an arithmetic number, because the mean of its divisors is an integer number (3431060955).

Almost surely, 2^22220204212 is an apocalyptic number.

It is an amenable number.

22220204212 is a deficient number, since it is larger than the sum of its proper divisors (18952527248).

22220204212 is a wasteful number, since it uses less digits than its factorization.

22220204212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326767730 (or 326767728 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 22220204212 its reverse (21240202222), we get a palindrome (43460406434).

The spelling of 22220204212 in words is "twenty-two billion, two hundred twenty million, two hundred four thousand, two hundred twelve".