21222223210200 has 96 divisors (see below), whose sum is σ = 66076180117200. Its totient is φ = 5634546562560.

The previous prime is 21222223210157. The next prime is 21222223210207. The reversal of 21222223210200 is 201232222212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222223210207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77090487 + ... + 77365286.

Almost surely, 2^{21222223210200} is an apocalyptic number.

21222223210200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21222223210200 is an abundant number, since it is smaller than the sum of its proper divisors (44853956907000).

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

21222223210200 is a wasteful number, since it uses less digits than its factorization.

21222223210200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154456021 (or 154456012 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21222223210200 its reverse (201232222212), we get a palindrome (21423455432412).

The spelling of 21222223210200 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred twenty-three million, two hundred ten thousand, two hundred".