71211100011122 has 4 divisors (see below), whose sum is σ = 106816650016686. Its totient is φ = 35605550005560.

The previous prime is 71211100011053. The next prime is 71211100011127. The reversal of 71211100011122 is 22111000111217.

It is a happy number.

71211100011122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38663287716361 + 32547812294761 = 6217981^2 + 5705069^2 .

It is a super-3 number, since 3×71211100011122³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71211100011094 and 71211100011103.

It is not an unprimeable number, because it can be changed into a prime (71211100011127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17802775002779 + ... + 17802775002782.

Almost surely, 2^{71211100011122} is an apocalyptic number.

71211100011122 is a deficient number, since it is larger than the sum of its proper divisors (35605550005564).

71211100011122 is a wasteful number, since it uses less digits than its factorization.

71211100011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35605550005563.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 71211100011122 its reverse (22111000111217), we get a palindrome (93322100122339).

The spelling of 71211100011122 in words is "seventy-one trillion, two hundred eleven billion, one hundred million, eleven thousand, one hundred twenty-two".