12122345 has 8 divisors (see below), whose sum is σ = 14885376. Its totient is φ = 9472176.

The previous prime is 12122339. The next prime is 12122359. The reversal of 12122345 is 54322121.

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 12122345 - 2¹⁰ = 12121321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27977 + ... + 28406.

It is an arithmetic number, because the mean of its divisors is an integer number (1860672).

Almost surely, 2^12122345 is an apocalyptic number.

It is an amenable number.

12122345 is a deficient number, since it is larger than the sum of its proper divisors (2763031).

12122345 is an equidigital number, since it uses as much as digits as its factorization.

12122345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56431.

The product of its digits is 480, while the sum is 20.

The square root of 12122345 is about 3481.7158126418. The cubic root of 12122345 is about 229.7182750964.

Adding to 12122345 its reverse (54322121), we get a palindrome (66444466).

The spelling of 12122345 in words is "twelve million, one hundred twenty-two thousand, three hundred forty-five".