12081322 has 16 divisors (see below), whose sum is σ = 20932992. Its totient is φ = 5168320.

The previous prime is 12081319. The next prime is 12081331. The reversal of 12081322 is 22318021.

It is a self number, because there is not a number n which added to its sum of digits gives 12081322.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15778 + ... + 16525.

It is an arithmetic number, because the mean of its divisors is an integer number (1308312).

Almost surely, 2^12081322 is an apocalyptic number.

12081322 is a deficient number, since it is larger than the sum of its proper divisors (8851670).

12081322 is a wasteful number, since it uses less digits than its factorization.

12081322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32333.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12081322 is about 3475.8196155727. The cubic root of 12081322 is about 229.4588538086.

Adding to 12081322 its reverse (22318021), we get a palindrome (34399343).

It can be divided in two parts, 12081 and 322, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 12081322 in words is "twelve million, eighty-one thousand, three hundred twenty-two".