71232123212 has 6 divisors (see below), whose sum is σ = 124656215628. Its totient is φ = 35616061604.

The previous prime is 71232123167. The next prime is 71232123217. The reversal of 71232123212 is 21232123217.

It is not an unprimeable number, because it can be changed into a prime (71232123217) 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, 8904015398 + ... + 8904015405.

It is an arithmetic number, because the mean of its divisors is an integer number (20776035938).

Almost surely, 2^71232123212 is an apocalyptic number.

It is an amenable number.

71232123212 is a deficient number, since it is larger than the sum of its proper divisors (53424092416).

71232123212 is a wasteful number, since it uses less digits than its factorization.

71232123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17808030807 (or 17808030805 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

Adding to 71232123212 its reverse (21232123217), we get a palindrome (92464246429).

The spelling of 71232123212 in words is "seventy-one billion, two hundred thirty-two million, one hundred twenty-three thousand, two hundred twelve".