71012171201 has 2 divisors, whose sum is σ = 71012171202. Its totient is φ = 71012171200.

The previous prime is 71012171189. The next prime is 71012171207. The reversal of 71012171201 is 10217121017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60123040000 + 10889131201 = 245200^2 + 104351^2 .

It is an emirp because it is prime and its reverse (10217121017) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71012171201 is a prime.

It is not a weakly prime, because it can be changed into another prime (71012171207) 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, 35506085600 + 35506085601.

It is an arithmetic number, because the mean of its divisors is an integer number (35506085601).

Almost surely, 2^71012171201 is an apocalyptic number.

It is an amenable number.

71012171201 is a deficient number, since it is larger than the sum of its proper divisors (1).

71012171201 is an equidigital number, since it uses as much as digits as its factorization.

71012171201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196, while the sum is 23.

Adding to 71012171201 its reverse (10217121017), we get a palindrome (81229292218).

The spelling of 71012171201 in words is "seventy-one billion, twelve million, one hundred seventy-one thousand, two hundred one".