22200220100221 has 12 divisors (see below), whose sum is σ = 23583679993780. Its totient is φ = 20893662766080.

The previous prime is 22200220100203. The next prime is 22200220100237. The reversal of 22200220100221 is 12200102200222.

It can be written as a sum of positive squares in 6 ways, for example, as 450952540900 + 21749267559321 = 671530^2 + 4663611^2 .

It is not a de Polignac number, because 22200220100221 - 2⁴¹ = 20001196844669 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22200220100195 and 22200220100204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200220100621) 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 11 ways as a sum of consecutive naturals, for example, 8041525 + ... + 10443493.

Almost surely, 2^{22200220100221} is an apocalyptic number.

It is an amenable number.

22200220100221 is a deficient number, since it is larger than the sum of its proper divisors (1383459893559).

22200220100221 is a wasteful number, since it uses less digits than its factorization.

22200220100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433984 (or 2433967 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22200220100221 its reverse (12200102200222), we get a palindrome (34400322300443).

The spelling of 22200220100221 in words is "twenty-two trillion, two hundred billion, two hundred twenty million, one hundred thousand, two hundred twenty-one".