22200202212221 has 4 divisors (see below), whose sum is σ = 24218402413344. Its totient is φ = 20182002011100.

The previous prime is 22200202212173. The next prime is 22200202212229. The reversal of 22200202212221 is 12221220200222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22200202212221 - 2¹⁰ = 22200202211197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22200202212193 and 22200202212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200202212229) 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 3 ways as a sum of consecutive naturals, for example, 1009100100545 + ... + 1009100100566.

It is an arithmetic number, because the mean of its divisors is an integer number (6054600603336).

Almost surely, 2^{22200202212221} is an apocalyptic number.

It is an amenable number.

22200202212221 is a deficient number, since it is larger than the sum of its proper divisors (2018200201123).

22200202212221 is a wasteful number, since it uses less digits than its factorization.

22200202212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018200201122.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22200202212221 its reverse (12221220200222), we get a palindrome (34421422412443).

The spelling of 22200202212221 in words is "twenty-two trillion, two hundred billion, two hundred two million, two hundred twelve thousand, two hundred twenty-one".