12122645 has 8 divisors (see below), whose sum is σ = 14764704. Its totient is φ = 9553104.

The previous prime is 12122641. The next prime is 12122647. The reversal of 12122645 is 54622121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12122645 - 2² = 12122641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12122645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122641) 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, 17759 + ... + 18428.

It is an arithmetic number, because the mean of its divisors is an integer number (1845588).

Almost surely, 2^12122645 is an apocalyptic number.

It is an amenable number.

12122645 is a deficient number, since it is larger than the sum of its proper divisors (2642059).

12122645 is an equidigital number, since it uses as much as digits as its factorization.

12122645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36259.

The product of its digits is 960, while the sum is 23.

The square root of 12122645 is about 3481.7588945819. The cubic root of 12122645 is about 229.7201700795.

Adding to 12122645 its reverse (54622121), we get a palindrome (66744766).

The spelling of 12122645 in words is "twelve million, one hundred twenty-two thousand, six hundred forty-five".