12103816 has 16 divisors (see below), whose sum is σ = 23178240. Its totient is φ = 5922960.

The previous prime is 12103811. The next prime is 12103829. The reversal of 12103816 is 61830121.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12103811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15720 + ... + 16471.

It is an arithmetic number, because the mean of its divisors is an integer number (1448640).

Almost surely, 2^12103816 is an apocalyptic number.

It is an amenable number.

12103816 is a deficient number, since it is larger than the sum of its proper divisors (11074424).

12103816 is a wasteful number, since it uses less digits than its factorization.

12103816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32244 (or 32240 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 12103816 is about 3479.0538943799. The cubic root of 12103816 is about 229.6011739794.

Adding to 12103816 its reverse (61830121), we get a palindrome (73933937).

The spelling of 12103816 in words is "twelve million, one hundred three thousand, eight hundred sixteen".