22201244210221 has 8 divisors (see below), whose sum is σ = 22236391071288. Its totient is φ = 22166098944000.

The previous prime is 22201244210207. The next prime is 22201244210279. The reversal of 22201244210221 is 12201244210222.

It can be written as a sum of positive squares in 4 ways, for example, as 431451922500 + 21769792287721 = 656850^2 + 4665811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22201244210221 - 2¹³ = 22201244202029 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 (22201244210281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29201061 + ... + 29951701.

It is an arithmetic number, because the mean of its divisors is an integer number (2779548883911).

Almost surely, 2^{22201244210221} is an apocalyptic number.

It is an amenable number.

22201244210221 is a deficient number, since it is larger than the sum of its proper divisors (35146861067).

22201244210221 is an equidigital number, since it uses as much as digits as its factorization.

22201244210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797423.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 22201244210221 its reverse (12201244210222), we get a palindrome (34402488420443).

Subtracting from 22201244210221 its reverse (12201244210222), we obtain a palindrome (9999999999999).

The spelling of 22201244210221 in words is "twenty-two trillion, two hundred one billion, two hundred forty-four million, two hundred ten thousand, two hundred twenty-one".