22202110020221 has 4 divisors (see below), whose sum is σ = 22218186857244. Its totient is φ = 22186033183200.

The previous prime is 22202110020197. The next prime is 22202110020227. The reversal of 22202110020221 is 12202001120222.

It is a happy number.

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 14762231887225 + 7439878132996 = 3842165^2 + 2727614^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202110020221 - 2⁶ = 22202110020157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22202110020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202110020227) 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, 8038416440 + ... + 8038419201.

It is an arithmetic number, because the mean of its divisors is an integer number (5554546714311).

Almost surely, 2^{22202110020221} is an apocalyptic number.

It is an amenable number.

22202110020221 is a deficient number, since it is larger than the sum of its proper divisors (16076837023).

22202110020221 is a wasteful number, since it uses less digits than its factorization.

22202110020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16076837022.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22202110020221 its reverse (12202001120222), we get a palindrome (34404111140443).

The spelling of 22202110020221 in words is "twenty-two trillion, two hundred two billion, one hundred ten million, twenty thousand, two hundred twenty-one".