12108345 has 16 divisors (see below), whose sum is σ = 19420800. Its totient is φ = 6441984.

The previous prime is 12108331. The next prime is 12108359. The reversal of 12108345 is 54380121.

It is an interprime number because it is at equal distance from previous prime (12108331) and next prime (12108359).

It is not a de Polignac number, because 12108345 - 2⁴ = 12108329 is a prime.

It is a super-2 number, since 2×12108345² = 293224037278050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7956 + ... + 9354.

It is an arithmetic number, because the mean of its divisors is an integer number (1213800).

Almost surely, 2^12108345 is an apocalyptic number.

12108345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12108345 is a deficient number, since it is larger than the sum of its proper divisors (7312455).

12108345 is a wasteful number, since it uses less digits than its factorization.

12108345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 12108345 is about 3479.7047288527. The cubic root of 12108345 is about 229.6298077602.

Adding to 12108345 its reverse (54380121), we get a palindrome (66488466).

The spelling of 12108345 in words is "twelve million, one hundred eight thousand, three hundred forty-five".