11111441 has 4 divisors (see below), whose sum is σ = 12121584. Its totient is φ = 10101300.

The previous prime is 11111431. The next prime is 11111491. The reversal of 11111441 is 14411111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11111441 - 2¹⁰ = 11110417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111431) 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, 505055 + ... + 505076.

It is an arithmetic number, because the mean of its divisors is an integer number (3030396).

Almost surely, 2^11111441 is an apocalyptic number.

11111441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11111441 is a deficient number, since it is larger than the sum of its proper divisors (1010143).

11111441 is a wasteful number, since it uses less digits than its factorization.

11111441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010142.

The product of its digits is 16, while the sum is 14.

The square root of 11111441 is about 3333.3828162994. The cubic root of 11111441 is about 223.1465250571.

Adding to 11111441 its reverse (14411111), we get a palindrome (25522552).

It can be divided in two parts, 1111 and 1441, that added together give a palindrome (2552).

The spelling of 11111441 in words is "eleven million, one hundred eleven thousand, four hundred forty-one".