22212101210221 has 8 divisors (see below), whose sum is σ = 24042149379864. Its totient is φ = 20399399469120.

The previous prime is 22212101210207. The next prime is 22212101210237. The reversal of 22212101210221 is 12201210121222.

It can be written as a sum of positive squares in 4 ways, for example, as 13846875457321 + 8365225752900 = 3721139^2 + 2892270^2 .

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 22212101210221 - 2¹⁷ = 22212101079149 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 (22212101210281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4336604470 + ... + 4336609591.

It is an arithmetic number, because the mean of its divisors is an integer number (3005268672483).

Almost surely, 2^{22212101210221} is an apocalyptic number.

It is an amenable number.

22212101210221 is a deficient number, since it is larger than the sum of its proper divisors (1830048169643).

22212101210221 is a wasteful number, since it uses less digits than its factorization.

22212101210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8673214271.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22212101210221 its reverse (12201210121222), we get a palindrome (34413311331443).

The spelling of 22212101210221 in words is "twenty-two trillion, two hundred twelve billion, one hundred one million, two hundred ten thousand, two hundred twenty-one".