12101986 has 16 divisors (see below), whose sum is σ = 19656000. Its totient is φ = 5555088.

The previous prime is 12101927. The next prime is 12102001. The reversal of 12101986 is 68910121.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 4005 + ... + 6343.

It is an arithmetic number, because the mean of its divisors is an integer number (1228500).

Almost surely, 2^12101986 is an apocalyptic number.

12101986 is a deficient number, since it is larger than the sum of its proper divisors (7554014).

12101986 is a wasteful number, since it uses less digits than its factorization.

12101986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 12101986 is about 3478.7908819014. The cubic root of 12101986 is about 229.5896021102.

The spelling of 12101986 in words is "twelve million, one hundred one thousand, nine hundred eighty-six".