11100110221 has 2 divisors, whose sum is σ = 11100110222. Its totient is φ = 11100110220.

The previous prime is 11100110207. The next prime is 11100110227. The reversal of 11100110221 is 12201100111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8838632196 + 2261478025 = 94014^2 + 47555^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100110221 - 2¹³ = 11100102029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11100110198 and 11100110207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11100110227) 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 as a sum of consecutive naturals, namely, 5550055110 + 5550055111.

It is an arithmetic number, because the mean of its divisors is an integer number (5550055111).

Almost surely, 2^11100110221 is an apocalyptic number.

It is an amenable number.

11100110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100110221 is an equidigital number, since it uses as much as digits as its factorization.

11100110221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11100110221 its reverse (12201100111), we get a palindrome (23301210332).

The spelling of 11100110221 in words is "eleven billion, one hundred million, one hundred ten thousand, two hundred twenty-one".