21015341041 has 2 divisors, whose sum is σ = 21015341042. Its totient is φ = 21015341040.

The previous prime is 21015340991. The next prime is 21015341119. The reversal of 21015341041 is 14014351012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15610003600 + 5405337441 = 124940^2 + 73521^2 .

It is a cyclic number.

It is not a de Polignac number, because 21015341041 - 2⁹ = 21015340529 is a prime.

It is not a weakly prime, because it can be changed into another prime (21010341041) 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, 10507670520 + 10507670521.

It is an arithmetic number, because the mean of its divisors is an integer number (10507670521).

Almost surely, 2^21015341041 is an apocalyptic number.

It is an amenable number.

21015341041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21015341041 is an equidigital number, since it uses as much as digits as its factorization.

21015341041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 21015341041 its reverse (14014351012), we get a palindrome (35029692053).

The spelling of 21015341041 in words is "twenty-one billion, fifteen million, three hundred forty-one thousand, forty-one".