12055 has 4 divisors (see below), whose sum is σ = 14472.
Its totient is φ = 9640.
The previous prime is 12049. The next prime is 12071. The reversal of 12055 is 55021.
12055 = T12 + T13 + ... +
It is a semiprime because it is the product of two primes.
It is not a de Polignac number, because 12055 - 27 = 11927 is a prime.
It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is an Ulam number.
It is a Duffinian number.
It is a plaindrome in base 15.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1201 + ... + 1210.
It is an arithmetic number, because the mean of its divisors is an integer number (3618).
212055 is an apocalyptic number.
12055 is a deficient number, since it is larger than the sum of its proper divisors (2417).
12055 is an equidigital number, since it uses as much as digits as its factorization.
12055 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2416.
The product of its (nonzero) digits is 50, while the sum is 13.
The square root of 12055 is about 109.7952640144.
The cubic root of 12055 is about 22.9292089287.
Adding to 12055 its reverse (55021), we get a palindrome (67076).
The spelling of 12055 in words is "twelve thousand, fifty-five".