22204344340221 has 16 divisors (see below), whose sum is σ = 29823184433664. Its totient is φ = 14694209594624.

The previous prime is 22204344340201. The next prime is 22204344340247. The reversal of 22204344340221 is 12204344340222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22204344340221 - 2²⁹ = 22203807469309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22204344340201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8429401 + ... + 10745393.

It is an arithmetic number, because the mean of its divisors is an integer number (1863949027104).

Almost surely, 2^{22204344340221} is an apocalyptic number.

It is an amenable number.

22204344340221 is a deficient number, since it is larger than the sum of its proper divisors (7618840093443).

22204344340221 is a wasteful number, since it uses less digits than its factorization.

22204344340221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339460.

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 22204344340221 its reverse (12204344340222), we get a palindrome (34408688680443).

Subtracting from 22204344340221 its reverse (12204344340222), we obtain a palindrome (9999999999999).

The spelling of 22204344340221 in words is "twenty-two trillion, two hundred four billion, three hundred forty-four million, three hundred forty thousand, two hundred twenty-one".