71122020212 has 12 divisors (see below), whose sum is σ = 124481814240. Its totient is φ = 35555787576.

The previous prime is 71122020187. The next prime is 71122020239. The reversal of 71122020212 is 21202022117.

It is a super-2 number, since 2×71122020212² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274912 + ... + 1329527.

It is an arithmetic number, because the mean of its divisors is an integer number (10373484520).

Almost surely, 2^71122020212 is an apocalyptic number.

It is an amenable number.

71122020212 is a deficient number, since it is larger than the sum of its proper divisors (53359794028).

71122020212 is a wasteful number, since it uses less digits than its factorization.

71122020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611270 (or 2611268 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 71122020212 its reverse (21202022117), we get a palindrome (92324042329).

The spelling of 71122020212 in words is "seventy-one billion, one hundred twenty-two million, twenty thousand, two hundred twelve".