11010210221 has 2 divisors, whose sum is σ = 11010210222. Its totient is φ = 11010210220.

The previous prime is 11010210199. The next prime is 11010210223. The reversal of 11010210221 is 12201201011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10943461321 + 66748900 = 104611^2 + 8170^2 .

It is an emirp because it is prime and its reverse (12201201011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11010210221 is a prime.

It is a super-2 number, since 2×11010210221² (a number of 21 digits) contains 22 as substring.

Together with 11010210223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11010210223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505105110 + 5505105111.

It is an arithmetic number, because the mean of its divisors is an integer number (5505105111).

Almost surely, 2^11010210221 is an apocalyptic number.

It is an amenable number.

11010210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11010210221 is an equidigital number, since it uses as much as digits as its factorization.

11010210221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11010210221 its reverse (12201201011), we get a palindrome (23211411232).

The spelling of 11010210221 in words is "eleven billion, ten million, two hundred ten thousand, two hundred twenty-one".