22210202221 has 4 divisors (see below), whose sum is σ = 22228363872. Its totient is φ = 22192040572.

The previous prime is 22210202219. The next prime is 22210202237. The reversal of 22210202221 is 12220201222.

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 22210202221 - 2¹ = 22210202219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22210202195 and 22210202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210202281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9078991 + ... + 9081436.

It is an arithmetic number, because the mean of its divisors is an integer number (5557090968).

Almost surely, 2^22210202221 is an apocalyptic number.

It is an amenable number.

22210202221 is a deficient number, since it is larger than the sum of its proper divisors (18161651).

22210202221 is a wasteful number, since it uses less digits than its factorization.

22210202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18161650.

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

Adding to 22210202221 its reverse (12220201222), we get a palindrome (34430403443).

Subtracting from 22210202221 its reverse (12220201222), we obtain a palindrome (9990000999).

The spelling of 22210202221 in words is "twenty-two billion, two hundred ten million, two hundred two thousand, two hundred twenty-one".