11010111110021 has 2 divisors, whose sum is σ = 11010111110022. Its totient is φ = 11010111110020.

The previous prime is 11010111109979. The next prime is 11010111110183. The reversal of 11010111110021 is 12001111101011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11009754429025 + 356680996 = 3318095^2 + 18886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11010111110021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11010111109984 and 11010111110011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11010111110321) 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, 5505055555010 + 5505055555011.

It is an arithmetic number, because the mean of its divisors is an integer number (5505055555011).

Almost surely, 2^{11010111110021} is an apocalyptic number.

It is an amenable number.

11010111110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11010111110021 is an equidigital number, since it uses as much as digits as its factorization.

11010111110021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 11010111110021 its reverse (12001111101011), we get a palindrome (23011222211032).

The spelling of 11010111110021 in words is "eleven trillion, ten billion, one hundred eleven million, one hundred ten thousand, twenty-one".