12111908 has 24 divisors (see below), whose sum is σ = 22081080. Its totient is φ = 5806080.

The previous prime is 12111907. The next prime is 12111923. The reversal of 12111908 is 80911121.

It can be written as a sum of positive squares in 4 ways, for example, as 565504 + 11546404 = 752^2 + 3398^2 .

It is not an unprimeable number, because it can be changed into a prime (12111901) 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, 22118 + ... + 22658.

It is an arithmetic number, because the mean of its divisors is an integer number (920045).

Almost surely, 2^12111908 is an apocalyptic number.

It is an amenable number.

12111908 is a deficient number, since it is larger than the sum of its proper divisors (9969172).

12111908 is a wasteful number, since it uses less digits than its factorization.

12111908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 12111908 is about 3480.2166599222. The cubic root of 12111908 is about 229.6523291636.

The spelling of 12111908 in words is "twelve million, one hundred eleven thousand, nine hundred eight".