12011 has 2 divisors, whose sum is σ = 12012.
Its totient is φ = 12010.
The previous prime is 12007. The next prime is 12037. The reversal of 12011 is 11021.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 12011 - 22 = 12007 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 11986 and 12004.
It is not a weakly prime, because it can be changed into another prime (12041) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005 + 6006.
It is an arithmetic number, because the mean of its divisors is an integer number (6006).
212011 is an apocalyptic number.
12011 is a deficient number, since it is larger than the sum of its proper divisors (1).
12011 is an equidigital number, since it uses as much as digits as its factorization.
12011 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2, while the sum is 5.
The square root of 12011 is about 109.5947079014.
The cubic root of 12011 is about 22.9012781906.
Adding to 12011 its reverse (11021), we get a palindrome (23032).
Subtracting from 12011 its reverse (11021), we obtain a triangular number (990 = T44).
Multiplying 12011 by its reverse (11021), we get a palindrome (132373231).
It can be divided in two parts, 120 and 11, that added together give a palindrome (131).
The spelling of 12011 in words is "twelve thousand, eleven", and thus it is an iban number.