11321222020021 has 2 divisors, whose sum is σ = 11321222020022. Its totient is φ = 11321222020020.

The previous prime is 11321222019977. The next prime is 11321222020033. The reversal of 11321222020021 is 12002022212311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6634694124100 + 4686527895921 = 2575790^2 + 2164839^2 .

It is a cyclic number.

It is not a de Polignac number, because 11321222020021 - 2⁹ = 11321222019509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11321222020091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660611010010 + 5660611010011.

It is an arithmetic number, because the mean of its divisors is an integer number (5660611010011).

Almost surely, 2^{11321222020021} is an apocalyptic number.

It is an amenable number.

11321222020021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321222020021 is an equidigital number, since it uses as much as digits as its factorization.

11321222020021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11321222020021 its reverse (12002022212311), we get a palindrome (23323244232332).

The spelling of 11321222020021 in words is "eleven trillion, three hundred twenty-one billion, two hundred twenty-two million, twenty thousand, twenty-one".