11111119 has 2 divisors, whose sum is σ = 11111120. Its totient is φ = 11111118.

The previous prime is 11111117. The next prime is 11111131. The reversal of 11111119 is 91111111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11111119 - 2¹ = 11111117 is a prime.

It is a super-2 number, since 2×11111119² = 246913930864322, which contains 22 as substring.

Together with 11111117, it forms a pair of twin primes.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555559 + 5555560.

It is an arithmetic number, because the mean of its divisors is an integer number (5555560).

Almost surely, 2^11111119 is an apocalyptic number.

11111119 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111119 is an equidigital number, since it uses as much as digits as its factorization.

11111119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9, while the sum is 16.

The square root of 11111119 is about 3333.3345166665. The cubic root of 11111119 is about 223.1443695049.

It can be divided in two parts, 1111111 and 9, that multiplied together give a palindrome (9999999).

The spelling of 11111119 in words is "eleven million, one hundred eleven thousand, one hundred nineteen".