21214036533271 has 2 divisors, whose sum is σ = 21214036533272. Its totient is φ = 21214036533270.

The previous prime is 21214036533253. The next prime is 21214036533301. The reversal of 21214036533271 is 17233563041212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21214036533271 - 2⁷ = 21214036533143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21214036533671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607018266635 + 10607018266636.

It is an arithmetic number, because the mean of its divisors is an integer number (10607018266636).

Almost surely, 2^{21214036533271} is an apocalyptic number.

21214036533271 is a deficient number, since it is larger than the sum of its proper divisors (1).

21214036533271 is an equidigital number, since it uses as much as digits as its factorization.

21214036533271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

Adding to 21214036533271 its reverse (17233563041212), we get a palindrome (38447599574483).

The spelling of 21214036533271 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred thirty-three thousand, two hundred seventy-one".