11141111 has 2 divisors, whose sum is σ = 11141112. Its totient is φ = 11141110.

The previous prime is 11141089. The next prime is 11141113. The reversal of 11141111 is 11114111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11141111 - 2⁶ = 11141047 is a prime.

Together with 11141113, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11141092 and 11141101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11141113) 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 as a sum of consecutive naturals, namely, 5570555 + 5570556.

It is an arithmetic number, because the mean of its divisors is an integer number (5570556).

Almost surely, 2^11141111 is an apocalyptic number.

11141111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11141111 is an equidigital number, since it uses as much as digits as its factorization.

11141111 is an odious number, because the sum of its binary digits is odd.

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

The square root of 11141111 is about 3337.8302832828. The cubic root of 11141111 is about 223.3449653603.

Adding to 11141111 its reverse (11114111), we get a palindrome (22255222).

Subtracting from 11141111 its reverse (11114111), we obtain a cube (27000 = 30³).

The spelling of 11141111 in words is "eleven million, one hundred forty-one thousand, one hundred eleven".