12081822 has 16 divisors (see below), whose sum is σ = 24404112. Its totient is φ = 3987200.

The previous prime is 12081809. The next prime is 12081829. The reversal of 12081822 is 22818021.

It is a junction number, because it is equal to n+sod(n) for n = 12081792 and 12081801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12081829) 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 7 ways as a sum of consecutive naturals, for example, 9363 + ... + 10574.

It is an arithmetic number, because the mean of its divisors is an integer number (1525257).

Almost surely, 2^12081822 is an apocalyptic number.

12081822 is an abundant number, since it is smaller than the sum of its proper divisors (12322290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12081822 is a wasteful number, since it uses less digits than its factorization.

12081822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20043.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 12081822 is about 3475.8915403102. The cubic root of 12081822 is about 229.4620192415.

Adding to 12081822 its reverse (22818021), we get a palindrome (34899843).

The spelling of 12081822 in words is "twelve million, eighty-one thousand, eight hundred twenty-two".