12201917 has 8 divisors (see below), whose sum is σ = 15017856. Its totient is φ = 9654192.

The previous prime is 12201901. The next prime is 12201923. The reversal of 12201917 is 71910221.

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 12201917 - 2⁴ = 12201901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12201892 and 12201901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221917) 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, 66953 + ... + 67134.

It is an arithmetic number, because the mean of its divisors is an integer number (1877232).

Almost surely, 2^12201917 is an apocalyptic number.

It is an amenable number.

12201917 is a deficient number, since it is larger than the sum of its proper divisors (2815939).

12201917 is a wasteful number, since it uses less digits than its factorization.

12201917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134107.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 12201917 is about 3493.1242462873. The cubic root of 12201917 is about 230.2198087676.

The spelling of 12201917 in words is "twelve million, two hundred one thousand, nine hundred seventeen".