21300244411 has 2 divisors, whose sum is σ = 21300244412. Its totient is φ = 21300244410.

The previous prime is 21300244391. The next prime is 21300244417. The reversal of 21300244411 is 11444200312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21300244411 - 2⁵ = 21300244379 is a prime.

It is not a weakly prime, because it can be changed into another prime (21300244417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650122205 + 10650122206.

It is an arithmetic number, because the mean of its divisors is an integer number (10650122206).

Almost surely, 2^21300244411 is an apocalyptic number.

21300244411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300244411 is an equidigital number, since it uses as much as digits as its factorization.

21300244411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21300244411 its reverse (11444200312), we get a palindrome (32744444723).

The spelling of 21300244411 in words is "twenty-one billion, three hundred million, two hundred forty-four thousand, four hundred eleven".