21010212330271 has 2 divisors, whose sum is σ = 21010212330272. Its totient is φ = 21010212330270.

The previous prime is 21010212330169. The next prime is 21010212330277. The reversal of 21010212330271 is 17203321201012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21010212330271 - 2²³ = 21010203941663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010212330277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505106165135 + 10505106165136.

It is an arithmetic number, because the mean of its divisors is an integer number (10505106165136).

Almost surely, 2^{21010212330271} is an apocalyptic number.

21010212330271 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010212330271 is an equidigital number, since it uses as much as digits as its factorization.

21010212330271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 21010212330271 its reverse (17203321201012), we get a palindrome (38213533531283).

It can be divided in two parts, 21010212330 and 271, that added together give a square (21010212601 = 144949²).

The spelling of 21010212330271 in words is "twenty-one trillion, ten billion, two hundred twelve million, three hundred thirty thousand, two hundred seventy-one".