11100210221 has 2 divisors, whose sum is σ = 11100210222. Its totient is φ = 11100210220.

The previous prime is 11100210217. The next prime is 11100210223. The reversal of 11100210221 is 12201200111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9962834596 + 1137375625 = 99814^2 + 33725^2 .

It is an emirp because it is prime and its reverse (12201200111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11100210221 - 2² = 11100210217 is a prime.

Together with 11100210223, 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 (11100210223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550105110 + 5550105111.

It is an arithmetic number, because the mean of its divisors is an integer number (5550105111).

Almost surely, 2^11100210221 is an apocalyptic number.

It is an amenable number.

11100210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100210221 is an equidigital number, since it uses as much as digits as its factorization.

11100210221 is an evil number, because the sum of its binary digits is even.

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

Adding to 11100210221 its reverse (12201200111), we get a palindrome (23301410332).

The spelling of 11100210221 in words is "eleven billion, one hundred million, two hundred ten thousand, two hundred twenty-one".