12122393 has 4 divisors (see below), whose sum is σ = 12140388. Its totient is φ = 12104400.

The previous prime is 12122389. The next prime is 12122401. The reversal of 12122393 is 39322121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39322121 = 127 ⋅309623.

It can be written as a sum of positive squares in 2 ways, for example, as 5004169 + 7118224 = 2237^2 + 2668^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122393 - 2² = 12122389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122093) 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 3 ways as a sum of consecutive naturals, for example, 7946 + ... + 9347.

It is an arithmetic number, because the mean of its divisors is an integer number (3035097).

Almost surely, 2^12122393 is an apocalyptic number.

It is an amenable number.

12122393 is a deficient number, since it is larger than the sum of its proper divisors (17995).

12122393 is an equidigital number, since it uses as much as digits as its factorization.

12122393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17994.

The product of its digits is 648, while the sum is 23.

The square root of 12122393 is about 3481.7227057880. The cubic root of 12122393 is about 229.7185782958.

The spelling of 12122393 in words is "twelve million, one hundred twenty-two thousand, three hundred ninety-three".