11111411111 has 4 divisors (see below), whose sum is σ = 11111656392. Its totient is φ = 11111165832.

The previous prime is 11111411099. The next prime is 11111411117.

11111411111 is nontrivially palindromic in base 10.

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 11111411111 - 2¹⁸ = 11111148967 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 (11111411117) 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, 32705 + ... + 152618.

It is an arithmetic number, because the mean of its divisors is an integer number (2777914098).

Almost surely, 2^11111411111 is an apocalyptic number.

11111411111 is a deficient number, since it is larger than the sum of its proper divisors (245281).

11111411111 is an equidigital number, since it uses as much as digits as its factorization.

11111411111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245280.

The product of its digits is 4, while the sum is 14.

The spelling of 11111411111 in words is "eleven billion, one hundred eleven million, four hundred eleven thousand, one hundred eleven".