211022020110221 has 4 divisors (see below), whose sum is σ = 212562326826492. Its totient is φ = 209481713393952.

The previous prime is 211022020110203. The next prime is 211022020110299. The reversal of 211022020110221 is 122011020220112.

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 152053289718121 + 58968730392100 = 12330989^2 + 7679110^2 .

It is a cyclic number.

It is not a de Polignac number, because 211022020110221 - 2¹⁴ = 211022020093837 is a prime.

It is a super-2 number, since 2×211022020110221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211022020110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211022020140221) 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, 770153357930 + ... + 770153358203.

It is an arithmetic number, because the mean of its divisors is an integer number (53140581706623).

Almost surely, 2^{211022020110221} is an apocalyptic number.

It is an amenable number.

211022020110221 is a deficient number, since it is larger than the sum of its proper divisors (1540306716271).

211022020110221 is a wasteful number, since it uses less digits than its factorization.

211022020110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540306716270.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211022020110221 its reverse (122011020220112), we get a palindrome (333033040330333).

The spelling of 211022020110221 in words is "two hundred eleven trillion, twenty-two billion, twenty million, one hundred ten thousand, two hundred twenty-one".