21411040271 has 2 divisors, whose sum is σ = 21411040272. Its totient is φ = 21411040270.

The previous prime is 21411040253. The next prime is 21411040361. The reversal of 21411040271 is 17204011412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21411040271 - 2¹⁸ = 21410778127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21411040571) 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, 10705520135 + 10705520136.

It is an arithmetic number, because the mean of its divisors is an integer number (10705520136).

Almost surely, 2^21411040271 is an apocalyptic number.

21411040271 is a deficient number, since it is larger than the sum of its proper divisors (1).

21411040271 is an equidigital number, since it uses as much as digits as its factorization.

21411040271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 21411040271 its reverse (17204011412), we get a palindrome (38615051683).

The spelling of 21411040271 in words is "twenty-one billion, four hundred eleven million, forty thousand, two hundred seventy-one".