21442300013 has 2 divisors, whose sum is σ = 21442300014. Its totient is φ = 21442300012.

The previous prime is 21442299997. The next prime is 21442300021. The reversal of 21442300013 is 31000324412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18170231209 + 3272068804 = 134797^2 + 57202^2 .

It is a cyclic number.

It is not a de Polignac number, because 21442300013 - 2⁴ = 21442299997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21442300093) 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, 10721150006 + 10721150007.

It is an arithmetic number, because the mean of its divisors is an integer number (10721150007).

Almost surely, 2^21442300013 is an apocalyptic number.

It is an amenable number.

21442300013 is a deficient number, since it is larger than the sum of its proper divisors (1).

21442300013 is an equidigital number, since it uses as much as digits as its factorization.

21442300013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21442300013 its reverse (31000324412), we get a palindrome (52442624425).

The spelling of 21442300013 in words is "twenty-one billion, four hundred forty-two million, three hundred thousand, thirteen".