12165901 has 8 divisors (see below), whose sum is σ = 13490208. Its totient is φ = 10878000.

The previous prime is 12165899. The next prime is 12165911. The reversal of 12165901 is 10956121.

12165901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12165901 - 2¹ = 12165899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12165911) 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, 8395 + ... + 9736.

It is an arithmetic number, because the mean of its divisors is an integer number (1686276).

Almost surely, 2^12165901 is an apocalyptic number.

12165901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12165901 is a deficient number, since it is larger than the sum of its proper divisors (1324307).

12165901 is a wasteful number, since it uses less digits than its factorization.

12165901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18203.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 12165901 is about 3487.9651661105. The cubic root of 12165901 is about 229.9930747757.

It can be divided in two parts, 1216 and 5901, that added together give a palindrome (7117).

The spelling of 12165901 in words is "twelve million, one hundred sixty-five thousand, nine hundred one".