11001102221 has 2 divisors, whose sum is σ = 11001102222. Its totient is φ = 11001102220.

The previous prime is 11001102197. The next prime is 11001102257. The reversal of 11001102221 is 12220110011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7630022500 + 3371079721 = 87350^2 + 58061^2 .

It is an emirp because it is prime and its reverse (12220110011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11001102221 - 2¹⁰ = 11001101197 is a prime.

It is a super-2 number, since 2×11001102221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11001102421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500551110 + 5500551111.

It is an arithmetic number, because the mean of its divisors is an integer number (5500551111).

Almost surely, 2^11001102221 is an apocalyptic number.

It is an amenable number.

11001102221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001102221 is an equidigital number, since it uses as much as digits as its factorization.

11001102221 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 11001102221 its reverse (12220110011), we get a palindrome (23221212232).

The spelling of 11001102221 in words is "eleven billion, one million, one hundred two thousand, two hundred twenty-one".