21035314241 has 2 divisors, whose sum is σ = 21035314242. Its totient is φ = 21035314240.

The previous prime is 21035314231. The next prime is 21035314271. The reversal of 21035314241 is 14241353012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19394740225 + 1640574016 = 139265^2 + 40504^2 .

It is a cyclic number.

It is not a de Polignac number, because 21035314241 - 2¹⁸ = 21035052097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21035314241.

It is not a weakly prime, because it can be changed into another prime (21035314211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517657120 + 10517657121.

It is an arithmetic number, because the mean of its divisors is an integer number (10517657121).

Almost surely, 2^21035314241 is an apocalyptic number.

It is an amenable number.

21035314241 is a deficient number, since it is larger than the sum of its proper divisors (1).

21035314241 is an equidigital number, since it uses as much as digits as its factorization.

21035314241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 21035314241 its reverse (14241353012), we get a palindrome (35276667253).

The spelling of 21035314241 in words is "twenty-one billion, thirty-five million, three hundred fourteen thousand, two hundred forty-one".