21303242224111 has 2 divisors, whose sum is σ = 21303242224112. Its totient is φ = 21303242224110.

The previous prime is 21303242224007. The next prime is 21303242224177. The reversal of 21303242224111 is 11142224230312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21303242224111 - 2¹⁹ = 21303241699823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21303242224111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21303242224211) 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, 10651621112055 + 10651621112056.

It is an arithmetic number, because the mean of its divisors is an integer number (10651621112056).

Almost surely, 2^{21303242224111} is an apocalyptic number.

21303242224111 is a deficient number, since it is larger than the sum of its proper divisors (1).

21303242224111 is an equidigital number, since it uses as much as digits as its factorization.

21303242224111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21303242224111 its reverse (11142224230312), we get a palindrome (32445466454423).

The spelling of 21303242224111 in words is "twenty-one trillion, three hundred three billion, two hundred forty-two million, two hundred twenty-four thousand, one hundred eleven".