111541108811 has 4 divisors (see below), whose sum is σ = 121681209624. Its totient is φ = 101401008000.

The previous prime is 111541108793. The next prime is 111541108859. The reversal of 111541108811 is 118801145111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118801145111 = 11 ⋅10800104101.

It is a cyclic number.

It is not a de Polignac number, because 111541108811 - 2¹⁰ = 111541107787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111541102811) 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, 5070050390 + ... + 5070050411.

It is an arithmetic number, because the mean of its divisors is an integer number (30420302406).

Almost surely, 2^111541108811 is an apocalyptic number.

111541108811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111541108811 is a deficient number, since it is larger than the sum of its proper divisors (10140100813).

111541108811 is a wasteful number, since it uses less digits than its factorization.

111541108811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140100812.

The product of its (nonzero) digits is 1280, while the sum is 32.

The spelling of 111541108811 in words is "one hundred eleven billion, five hundred forty-one million, one hundred eight thousand, eight hundred eleven".