11001110221021 has 2 divisors, whose sum is σ = 11001110221022. Its totient is φ = 11001110221020.

The previous prime is 11001110220917. The next prime is 11001110221039. The reversal of 11001110221021 is 12012201110011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8113302804996 + 2887807416025 = 2848386^2 + 1699355^2 .

It is an emirp because it is prime and its reverse (12012201110011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11001110221021 - 2³⁹ = 10451354407133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11001110220992 and 11001110221010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11001110228021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500555110510 + 5500555110511.

It is an arithmetic number, because the mean of its divisors is an integer number (5500555110511).

Almost surely, 2^{11001110221021} is an apocalyptic number.

It is an amenable number.

11001110221021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001110221021 is an equidigital number, since it uses as much as digits as its factorization.

11001110221021 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 13.

Adding to 11001110221021 its reverse (12012201110011), we get a palindrome (23013311331032).

The spelling of 11001110221021 in words is "eleven trillion, one billion, one hundred ten million, two hundred twenty-one thousand, twenty-one".