11440440111 has 4 divisors (see below), whose sum is σ = 15253920152. Its totient is φ = 7626960072.

The previous prime is 11440440101. The next prime is 11440440127. The reversal of 11440440111 is 11104404411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11104404411 = 3 ⋅3701468137.

It is not a de Polignac number, because 11440440111 - 2⁹ = 11440439599 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 (11440440101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906740016 + ... + 1906740021.

It is an arithmetic number, because the mean of its divisors is an integer number (3813480038).

Almost surely, 2^11440440111 is an apocalyptic number.

11440440111 is a deficient number, since it is larger than the sum of its proper divisors (3813480041).

11440440111 is an equidigital number, since it uses as much as digits as its factorization.

11440440111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813480040.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 11440440111 its reverse (11104404411), we get a palindrome (22544844522).

The spelling of 11440440111 in words is "eleven billion, four hundred forty million, four hundred forty thousand, one hundred eleven".