12011345 has 16 divisors (see below), whose sum is σ = 14781312. Its totient is φ = 9367680.

The previous prime is 12011323. The next prime is 12011357. The reversal of 12011345 is 54311021.

It is not a de Polignac number, because 12011345 - 2⁶ = 12011281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 42605 + ... + 42885.

It is an arithmetic number, because the mean of its divisors is an integer number (923832).

Almost surely, 2^12011345 is an apocalyptic number.

It is an amenable number.

12011345 is a deficient number, since it is larger than the sum of its proper divisors (2769967).

12011345 is a wasteful number, since it uses less digits than its factorization.

12011345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 12011345 is about 3465.7387379893. The cubic root of 12011345 is about 229.0149745806.

Adding to 12011345 its reverse (54311021), we get a palindrome (66322366).

The spelling of 12011345 in words is "twelve million, eleven thousand, three hundred forty-five".