22201133201221 has 4 divisors (see below), whose sum is σ = 23908912678252. Its totient is φ = 20493353724192.

The previous prime is 22201133201201. The next prime is 22201133201237. The reversal of 22201133201221 is 12210233110222.

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 4095989061025 + 18105144140196 = 2023855^2 + 4255014^2 .

It is a cyclic number.

It is not a de Polignac number, because 22201133201221 - 2¹¹ = 22201133199173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22201133201192 and 22201133201201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201133201201) 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, 853889738496 + ... + 853889738521.

It is an arithmetic number, because the mean of its divisors is an integer number (5977228169563).

Almost surely, 2^{22201133201221} is an apocalyptic number.

It is an amenable number.

22201133201221 is a deficient number, since it is larger than the sum of its proper divisors (1707779477031).

22201133201221 is a wasteful number, since it uses less digits than its factorization.

22201133201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707779477030.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 22201133201221 its reverse (12210233110222), we get a palindrome (34411366311443).

Subtracting from 22201133201221 its reverse (12210233110222), we obtain a palindrome (9990900090999).

The spelling of 22201133201221 in words is "twenty-two trillion, two hundred one billion, one hundred thirty-three million, two hundred one thousand, two hundred twenty-one".