11411111 has 4 divisors (see below), whose sum is σ = 11419224. Its totient is φ = 11403000.

The previous prime is 11411107. The next prime is 11411117. The reversal of 11411111 is 11111411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11411111 - 2² = 11411107 is a prime.

It is a Duffinian number.

11411111 is a modest number, since divided by 11111 gives 114 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 11411092 and 11411101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11411117) 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, 1340 + ... + 4961.

It is an arithmetic number, because the mean of its divisors is an integer number (2854806).

Almost surely, 2^11411111 is an apocalyptic number.

11411111 is a deficient number, since it is larger than the sum of its proper divisors (8113).

11411111 is an equidigital number, since it uses as much as digits as its factorization.

11411111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8112.

The product of its digits is 4, while the sum is 11.

The square root of 11411111 is about 3378.0335995961. The cubic root of 11411111 is about 225.1348064588.

Adding to 11411111 its reverse (11111411), we get a palindrome (22522522).

It can be divided in two parts, 11411 and 111, that multiplied together give a palindrome (1266621).

The spelling of 11411111 in words is "eleven million, four hundred eleven thousand, one hundred eleven".