12100985 has 16 divisors (see below), whose sum is σ = 15833664. Its totient is φ = 8824512.

The previous prime is 12100973. The next prime is 12100993. The reversal of 12100985 is 58900121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12100985 - 2⁴ = 12100969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4274 + ... + 6516.

It is an arithmetic number, because the mean of its divisors is an integer number (989604).

Almost surely, 2^12100985 is an apocalyptic number.

It is an amenable number.

12100985 is a deficient number, since it is larger than the sum of its proper divisors (3732679).

12100985 is a wasteful number, since it uses less digits than its factorization.

12100985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 12100985 is about 3478.6470070992. The cubic root of 12100985 is about 229.5832718674.

The spelling of 12100985 in words is "twelve million, one hundred thousand, nine hundred eighty-five".