17320121 has 8 divisors (see below), whose sum is σ = 21317184. Its totient is φ = 13703760.

The previous prime is 17320117. The next prime is 17320123. The reversal of 17320121 is 12102371.

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

It is not a de Polignac number, because 17320121 - 2² = 17320117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17320121.

It is not an unprimeable number, because it can be changed into a prime (17320123) 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, 95075 + ... + 95256.

It is an arithmetic number, because the mean of its divisors is an integer number (2664648).

Almost surely, 2^17320121 is an apocalyptic number.

It is an amenable number.

17320121 is a deficient number, since it is larger than the sum of its proper divisors (3997063).

17320121 is a wasteful number, since it uses less digits than its factorization.

17320121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190351.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 17320121 is about 4161.7449465338. The cubic root of 17320121 is about 258.7320962820.

Adding to 17320121 its reverse (12102371), we get a palindrome (29422492).

The spelling of 17320121 in words is "seventeen million, three hundred twenty thousand, one hundred twenty-one".