71210020012 has 24 divisors (see below), whose sum is σ = 125537642496. Its totient is φ = 35343044688.

The previous prime is 71210019971. The next prime is 71210020027. The reversal of 71210020012 is 21002001217.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194493 + ... + 424555.

It is an arithmetic number, because the mean of its divisors is an integer number (5230735104).

Almost surely, 2^71210020012 is an apocalyptic number.

It is an amenable number.

71210020012 is a deficient number, since it is larger than the sum of its proper divisors (54327622484).

71210020012 is a wasteful number, since it uses less digits than its factorization.

71210020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230637 (or 230635 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

Adding to 71210020012 its reverse (21002001217), we get a palindrome (92212021229).

The spelling of 71210020012 in words is "seventy-one billion, two hundred ten million, twenty thousand, twelve".