12011827 has 4 divisors (see below), whose sum is σ = 12191176. Its totient is φ = 11832480.

The previous prime is 12011821. The next prime is 12011833. The reversal of 12011827 is 72811021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72811021 = 19 ⋅3832159.

It is an interprime number because it is at equal distance from previous prime (12011821) and next prime (12011833).

It is a cyclic number.

It is not a de Polignac number, because 12011827 - 2¹¹ = 12009779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011798 and 12011807.

It is not an unprimeable number, because it can be changed into a prime (12011821) 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 in 3 ways as a sum of consecutive naturals, for example, 89574 + ... + 89707.

It is an arithmetic number, because the mean of its divisors is an integer number (3047794).

Almost surely, 2^12011827 is an apocalyptic number.

12011827 is a deficient number, since it is larger than the sum of its proper divisors (179349).

12011827 is an equidigital number, since it uses as much as digits as its factorization.

12011827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179348.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 12011827 is about 3465.8082751358. The cubic root of 12011827 is about 229.0180378995.

Adding to 12011827 its reverse (72811021), we get a palindrome (84822848).

The spelling of 12011827 in words is "twelve million, eleven thousand, eight hundred twenty-seven".