11117212071 has 32 divisors (see below), whose sum is σ = 17400960000. Its totient is φ = 6310533600.

The previous prime is 11117212061. The next prime is 11117212079. The reversal of 11117212071 is 17021271111.

11117212071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11117212071 - 2¹⁷ = 11117080999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11117212079) 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 in 31 ways as a sum of consecutive naturals, for example, 119605 + ... + 191153.

It is an arithmetic number, because the mean of its divisors is an integer number (543780000).

Almost surely, 2^11117212071 is an apocalyptic number.

11117212071 is a deficient number, since it is larger than the sum of its proper divisors (6283747929).

11117212071 is an equidigital number, since it uses as much as digits as its factorization.

11117212071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71724 (or 71710 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 24.

Adding to 11117212071 its reverse (17021271111), we get a palindrome (28138483182).

The spelling of 11117212071 in words is "eleven billion, one hundred seventeen million, two hundred twelve thousand, seventy-one".