12081346 has 4 divisors (see below), whose sum is σ = 18122022. Its totient is φ = 6040672.

The previous prime is 12081343. The next prime is 12081389. The reversal of 12081346 is 64318021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8037225 + 4044121 = 2835^2 + 2011^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12081346.

It is not an unprimeable number, because it can be changed into a prime (12081343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3020335 + ... + 3020338.

Almost surely, 2^12081346 is an apocalyptic number.

12081346 is a deficient number, since it is larger than the sum of its proper divisors (6040676).

12081346 is an equidigital number, since it uses as much as digits as its factorization.

12081346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6040675.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 12081346 is about 3475.8230679941. The cubic root of 12081346 is about 229.4590057513.

Adding to 12081346 its reverse (64318021), we get a palindrome (76399367).

The spelling of 12081346 in words is "twelve million, eighty-one thousand, three hundred forty-six".