22362362221 has 2 divisors, whose sum is σ = 22362362222. Its totient is φ = 22362362220.

The previous prime is 22362362219. The next prime is 22362362257. The reversal of 22362362221 is 12226326322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22311396900 + 50965321 = 149370^2 + 7139^2 .

It is a cyclic number.

It is not a de Polignac number, because 22362362221 - 2¹ = 22362362219 is a prime.

Together with 22362362219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22362360221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11181181110 + 11181181111.

It is an arithmetic number, because the mean of its divisors is an integer number (11181181111).

Almost surely, 2^22362362221 is an apocalyptic number.

It is an amenable number.

22362362221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22362362221 is an equidigital number, since it uses as much as digits as its factorization.

22362362221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 31.

Adding to 22362362221 its reverse (12226326322), we get a palindrome (34588688543).

The spelling of 22362362221 in words is "twenty-two billion, three hundred sixty-two million, three hundred sixty-two thousand, two hundred twenty-one".