22210302221 has 4 divisors (see below), whose sum is σ = 22213138332. Its totient is φ = 22207466112.

The previous prime is 22210302203. The next prime is 22210302223. The reversal of 22210302221 is 12220301222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11432955625 + 10777346596 = 106925^2 + 103814^2 .

It is a cyclic number.

It is not a de Polignac number, because 22210302221 - 2⁶ = 22210302157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22210302221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210302223) by changing a digit.

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, 1406276 + ... + 1421981.

It is an arithmetic number, because the mean of its divisors is an integer number (5553284583).

Almost surely, 2^22210302221 is an apocalyptic number.

It is an amenable number.

22210302221 is a deficient number, since it is larger than the sum of its proper divisors (2836111).

22210302221 is an equidigital number, since it uses as much as digits as its factorization.

22210302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836110.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22210302221 its reverse (12220301222), we get a palindrome (34430603443).

Subtracting from 22210302221 its reverse (12220301222), we obtain a palindrome (9990000999).

The spelling of 22210302221 in words is "twenty-two billion, two hundred ten million, three hundred two thousand, two hundred twenty-one".