21042024011 has 2 divisors, whose sum is σ = 21042024012. Its totient is φ = 21042024010.

The previous prime is 21042024001. The next prime is 21042024037. The reversal of 21042024011 is 11042024012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21042024011 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21042024001) 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, 10521012005 + 10521012006.

It is an arithmetic number, because the mean of its divisors is an integer number (10521012006).

Almost surely, 2^21042024011 is an apocalyptic number.

21042024011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21042024011 is an equidigital number, since it uses as much as digits as its factorization.

21042024011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21042024011 its reverse (11042024012), we get a palindrome (32084048023).

Subtracting from 21042024011 its reverse (11042024012), we obtain a palindrome (9999999999).

The spelling of 21042024011 in words is "twenty-one billion, forty-two million, twenty-four thousand, eleven".