71021130101 has 2 divisors, whose sum is σ = 71021130102. Its totient is φ = 71021130100.

The previous prime is 71021130071. The next prime is 71021130143. The reversal of 71021130101 is 10103112017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61206265201 + 9814864900 = 247399^2 + 99070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71021130101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71021130101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71021130151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35510565050 + 35510565051.

It is an arithmetic number, because the mean of its divisors is an integer number (35510565051).

Almost surely, 2^71021130101 is an apocalyptic number.

It is an amenable number.

71021130101 is a deficient number, since it is larger than the sum of its proper divisors (1).

71021130101 is an equidigital number, since it uses as much as digits as its factorization.

71021130101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 17.

Adding to 71021130101 its reverse (10103112017), we get a palindrome (81124242118).

The spelling of 71021130101 in words is "seventy-one billion, twenty-one million, one hundred thirty thousand, one hundred one".