22203344330221 has 4 divisors (see below), whose sum is σ = 22203355769244. Its totient is φ = 22203332891200.

The previous prime is 22203344330203. The next prime is 22203344330231. The reversal of 22203344330221 is 12203344330222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 18418817641225 + 3784526688996 = 4291715^2 + 1945386^2 .

It is a cyclic number.

It is not a de Polignac number, because 22203344330221 - 2¹⁷ = 22203344199149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22203344330231) 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, 2002990 + ... + 6958351.

It is an arithmetic number, because the mean of its divisors is an integer number (5550838942311).

Almost surely, 2^{22203344330221} is an apocalyptic number.

It is an amenable number.

22203344330221 is a deficient number, since it is larger than the sum of its proper divisors (11439023).

22203344330221 is an equidigital number, since it uses as much as digits as its factorization.

22203344330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11439022.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 22203344330221 its reverse (12203344330222), we get a palindrome (34406688660443).

Subtracting from 22203344330221 its reverse (12203344330222), we obtain a palindrome (9999999999999).

The spelling of 22203344330221 in words is "twenty-two trillion, two hundred three billion, three hundred forty-four million, three hundred thirty thousand, two hundred twenty-one".