22202010221 has 4 divisors (see below), whose sum is σ = 22451471100. Its totient is φ = 21952549344.

The previous prime is 22202010197. The next prime is 22202010263. The reversal of 22202010221 is 12201020222.

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 6101953225 + 16100056996 = 78115^2 + 126886^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202010221 - 2⁶ = 22202010157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22202010196 and 22202010205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202010121) 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, 124730306 + ... + 124730483.

It is an arithmetic number, because the mean of its divisors is an integer number (5612867775).

Almost surely, 2^22202010221 is an apocalyptic number.

It is an amenable number.

22202010221 is a deficient number, since it is larger than the sum of its proper divisors (249460879).

22202010221 is an equidigital number, since it uses as much as digits as its factorization.

22202010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249460878.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22202010221 its reverse (12201020222), we get a palindrome (34403030443).

The spelling of 22202010221 in words is "twenty-two billion, two hundred two million, ten thousand, two hundred twenty-one".