71122020211 has 6 divisors (see below), whose sum is σ = 78175443836. Its totient is φ = 64656381900.

The previous prime is 71122020187. The next prime is 71122020239. The reversal of 71122020211 is 11202022117.

It is not a de Polignac number, because 71122020211 - 2¹³ = 71122012019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71122020251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 293892525 + ... + 293892766.

Almost surely, 2^71122020211 is an apocalyptic number.

71122020211 is a deficient number, since it is larger than the sum of its proper divisors (7053423625).

71122020211 is a wasteful number, since it uses less digits than its factorization.

71122020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587785313 (or 587785302 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 71122020211 its reverse (11202022117), we get a palindrome (82324042328).

The spelling of 71122020211 in words is "seventy-one billion, one hundred twenty-two million, twenty thousand, two hundred eleven".