12816123 has 8 divisors (see below), whose sum is σ = 17219136. Its totient is φ = 8478600.

The previous prime is 12816109. The next prime is 12816131. The reversal of 12816123 is 32161821.

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

It is not a de Polignac number, because 12816123 - 2⁶ = 12816059 is a prime.

It is a super-2 number, since 2×12816123² = 328506017502258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12816093 and 12816102.

It is not an unprimeable number, because it can be changed into a prime (12816143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15913 + ... + 16698.

It is an arithmetic number, because the mean of its divisors is an integer number (2152392).

Almost surely, 2^12816123 is an apocalyptic number.

12816123 is a deficient number, since it is larger than the sum of its proper divisors (4403013).

12816123 is a wasteful number, since it uses less digits than its factorization.

12816123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32745.

The product of its digits is 576, while the sum is 24.

The square root of 12816123 is about 3579.9613126401. The cubic root of 12816123 is about 234.0195943852.

Adding to 12816123 its reverse (32161821), we get a palindrome (44977944).

The spelling of 12816123 in words is "twelve million, eight hundred sixteen thousand, one hundred twenty-three".