• Sorting the digits of 21119 in ascending order we obtain a prime of 300 digits.
1119 has 4 divisors (see below), whose sum is σ = 1496. Its totient is φ = 744.
The previous prime is 1117. The next prime is 1123. The reversal of 1119 is 9111.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9111 = 3 ⋅3037.
It is not a de Polignac number, because 1119 - 21 = 1117 is a prime.
It is a super-2 number, since 2×11192 = 2504322, which contains 22 as substring.
It is a D-number.
It is a Duffinian number.
It is a plaindrome in base 10, base 14 and base 16.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1117) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184 + ... + 189.
It is an arithmetic number, because the mean of its divisors is an integer number (374).
1119 is a deficient number, since it is larger than the sum of its proper divisors (377).
1119 is an equidigital number, since it uses as much as digits as its factorization.
1119 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 376.
The product of its digits is 9, while the sum is 12.
The square root of 1119 is about 33.4514573674. The cubic root of 1119 is about 10.3818965131.
It can be divided in two parts, 111 and 9, that multiplied together give a palindrome (999).
The spelling of 1119 in words is "one thousand, one hundred nineteen".
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