22331322020221 has 4 divisors (see below), whose sum is σ = 22331348997244. Its totient is φ = 22331295043200.

The previous prime is 22331322020209. The next prime is 22331322020251. The reversal of 22331322020221 is 12202022313322.

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 500803905625 + 21830518114596 = 707675^2 + 4672314^2 .

It is a cyclic number.

It is not a de Polignac number, because 22331322020221 - 2²¹ = 22331319923069 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 (22331322020201) 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, 12206190 + ... + 13915951.

It is an arithmetic number, because the mean of its divisors is an integer number (5582837249311).

Almost surely, 2^{22331322020221} is an apocalyptic number.

It is an amenable number.

22331322020221 is a deficient number, since it is larger than the sum of its proper divisors (26977023).

22331322020221 is an equidigital number, since it uses as much as digits as its factorization.

22331322020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26977022.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 22331322020221 its reverse (12202022313322), we get a palindrome (34533344333543).

The spelling of 22331322020221 in words is "twenty-two trillion, three hundred thirty-one billion, three hundred twenty-two million, twenty thousand, two hundred twenty-one".