11440321111 has 4 divisors (see below), whose sum is σ = 11467625400. Its totient is φ = 11413016824.

The previous prime is 11440321091. The next prime is 11440321121. The reversal of 11440321111 is 11112304411.

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 11440321111 - 2²⁷ = 11306103383 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 (11440321121) 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, 13651516 + ... + 13652353.

It is an arithmetic number, because the mean of its divisors is an integer number (2866906350).

Almost surely, 2^11440321111 is an apocalyptic number.

11440321111 is a deficient number, since it is larger than the sum of its proper divisors (27304289).

11440321111 is an equidigital number, since it uses as much as digits as its factorization.

11440321111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27304288.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 11440321111 its reverse (11112304411), we get a palindrome (22552625522).

The spelling of 11440321111 in words is "eleven billion, four hundred forty million, three hundred twenty-one thousand, one hundred eleven".