12101187 has 24 divisors (see below), whose sum is σ = 18911232. Its totient is φ = 6862800.

The previous prime is 12101179. The next prime is 12101227. The reversal of 12101187 is 78110121.

12101187 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12101187 - 2³ = 12101179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101147) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 27862 + ... + 28292.

It is an arithmetic number, because the mean of its divisors is an integer number (787968).

Almost surely, 2^12101187 is an apocalyptic number.

12101187 is a deficient number, since it is larger than the sum of its proper divisors (6810045).

12101187 is a wasteful number, since it uses less digits than its factorization.

12101187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 21.

The square root of 12101187 is about 3478.6760412548. The cubic root of 12101187 is about 229.5845493271.

The spelling of 12101187 in words is "twelve million, one hundred one thousand, one hundred eighty-seven".