71021130130 has 16 divisors (see below), whose sum is σ = 127911832344. Its totient is φ = 28392052480.

The previous prime is 71021130101. The next prime is 71021130143. The reversal of 71021130130 is 3103112017.

It can be written as a sum of positive squares in 4 ways, for example, as 34969374001 + 36051756129 = 187001^2 + 189873^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71021130098 and 71021130107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2031751 + ... + 2066410.

Almost surely, 2^71021130130 is an apocalyptic number.

71021130130 is a deficient number, since it is larger than the sum of its proper divisors (56890702214).

71021130130 is a wasteful number, since it uses less digits than its factorization.

71021130130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099901.

The product of its (nonzero) digits is 126, while the sum is 19.

Adding to 71021130130 its reverse (3103112017), we get a palindrome (74124242147).

The spelling of 71021130130 in words is "seventy-one billion, twenty-one million, one hundred thirty thousand, one hundred thirty".