21064714106171 has 2 divisors, whose sum is σ = 21064714106172. Its totient is φ = 21064714106170.

The previous prime is 21064714106129. The next prime is 21064714106197. The reversal of 21064714106171 is 17160141746012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21064714106171 is a prime.

It is a super-2 number, since 2×21064714106171² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21064714196171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10532357053085 + 10532357053086.

It is an arithmetic number, because the mean of its divisors is an integer number (10532357053086).

Almost surely, 2^{21064714106171} is an apocalyptic number.

21064714106171 is a deficient number, since it is larger than the sum of its proper divisors (1).

21064714106171 is an equidigital number, since it uses as much as digits as its factorization.

21064714106171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 41.

The spelling of 21064714106171 in words is "twenty-one trillion, sixty-four billion, seven hundred fourteen million, one hundred six thousand, one hundred seventy-one".