71331113220211 has 12 divisors (see below), whose sum is σ = 81783740674152. Its totient is φ = 61970921890176.

The previous prime is 71331113220203. The next prime is 71331113220223. The reversal of 71331113220211 is 11202231113317.

It is a happy number.

It is not a de Polignac number, because 71331113220211 - 2³ = 71331113220203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71331113220211.

It is not an unprimeable number, because it can be changed into a prime (71331113220011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12414043981 + ... + 12414049726.

It is an arithmetic number, because the mean of its divisors is an integer number (6815311722846).

Almost surely, 2^{71331113220211} is an apocalyptic number.

71331113220211 is a deficient number, since it is larger than the sum of its proper divisors (10452627453941).

71331113220211 is a wasteful number, since it uses less digits than its factorization.

71331113220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24828093750 (or 24828093737 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

Adding to 71331113220211 its reverse (11202231113317), we get a palindrome (82533344333528).

The spelling of 71331113220211 in words is "seventy-one trillion, three hundred thirty-one billion, one hundred thirteen million, two hundred twenty thousand, two hundred eleven".