12117001 has 16 divisors (see below), whose sum is σ = 13644288. Its totient is φ = 10684800.

The previous prime is 12116989. The next prime is 12117011. The reversal of 12117001 is 10071121.

It is a cyclic number.

It is not a de Polignac number, because 12117001 - 2⁵ = 12116969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12117011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42981 + ... + 43261.

It is an arithmetic number, because the mean of its divisors is an integer number (852768).

Almost surely, 2^12117001 is an apocalyptic number.

It is an amenable number.

12117001 is a deficient number, since it is larger than the sum of its proper divisors (1527287).

12117001 is a wasteful number, since it uses less digits than its factorization.

12117001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 14, while the sum is 13.

The square root of 12117001 is about 3480.9482903370. The cubic root of 12117001 is about 229.6845138921.

Adding to 12117001 its reverse (10071121), we get a palindrome (22188122).

The spelling of 12117001 in words is "twelve million, one hundred seventeen thousand, one".