22242303221 has 4 divisors (see below), whose sum is σ = 22277003244. Its totient is φ = 22207603200.

The previous prime is 22242303199. The next prime is 22242303229. The reversal of 22242303221 is 12230324222.

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 9128847025 + 13113456196 = 95545^2 + 114514^2 .

It is a cyclic number.

It is not a de Polignac number, because 22242303221 - 2¹⁰ = 22242302197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22242303229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17349050 + ... + 17350331.

It is an arithmetic number, because the mean of its divisors is an integer number (5569250811).

Almost surely, 2^22242303221 is an apocalyptic number.

It is an amenable number.

22242303221 is a deficient number, since it is larger than the sum of its proper divisors (34700023).

22242303221 is an equidigital number, since it uses as much as digits as its factorization.

22242303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34700022.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 22242303221 its reverse (12230324222), we get a palindrome (34472627443).

The spelling of 22242303221 in words is "twenty-two billion, two hundred forty-two million, three hundred three thousand, two hundred twenty-one".