115571522111 has 4 divisors (see below), whose sum is σ = 115589806392. Its totient is φ = 115553237832.

The previous prime is 115571522089. The next prime is 115571522123. The reversal of 115571522111 is 111225175511.

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

It is a cyclic number.

It is not a de Polignac number, because 115571522111 - 2¹⁴ = 115571505727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115571582111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9132656 + ... + 9145301.

It is an arithmetic number, because the mean of its divisors is an integer number (28897451598).

Almost surely, 2^115571522111 is an apocalyptic number.

115571522111 is a deficient number, since it is larger than the sum of its proper divisors (18284281).

115571522111 is an equidigital number, since it uses as much as digits as its factorization.

115571522111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18284280.

The product of its digits is 3500, while the sum is 32.

Adding to 115571522111 its reverse (111225175511), we get a palindrome (226796697622).

The spelling of 115571522111 in words is "one hundred fifteen billion, five hundred seventy-one million, five hundred twenty-two thousand, one hundred eleven".