22203120221 has 2 divisors, whose sum is σ = 22203120222. Its totient is φ = 22203120220.

The previous prime is 22203120209. The next prime is 22203120223. The reversal of 22203120221 is 12202130222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14826715225 + 7376404996 = 121765^2 + 85886^2 .

It is a cyclic number.

It is not a de Polignac number, because 22203120221 - 2¹⁸ = 22202858077 is a prime.

Together with 22203120223, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22203120221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22203120223) 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 as a sum of consecutive naturals, namely, 11101560110 + 11101560111.

It is an arithmetic number, because the mean of its divisors is an integer number (11101560111).

Almost surely, 2^22203120221 is an apocalyptic number.

It is an amenable number.

22203120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22203120221 is an equidigital number, since it uses as much as digits as its factorization.

22203120221 is an odious number, because the sum of its binary digits is odd.

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

Adding to 22203120221 its reverse (12202130222), we get a palindrome (34405250443).

The spelling of 22203120221 in words is "twenty-two billion, two hundred three million, one hundred twenty thousand, two hundred twenty-one".