17320203121 has 12 divisors (see below), whose sum is σ = 18898205040. Its totient is φ = 15865814640.

The previous prime is 17320203101. The next prime is 17320203137. The reversal of 17320203121 is 12130202371.

It is a happy number.

It is not a de Polignac number, because 17320203121 - 2¹⁵ = 17320170353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17320203092 and 17320203101.

It is not an unprimeable number, because it can be changed into a prime (17320203101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 369031 + ... + 413308.

It is an arithmetic number, because the mean of its divisors is an integer number (1574850420).

Almost surely, 2^17320203121 is an apocalyptic number.

It is an amenable number.

17320203121 is a deficient number, since it is larger than the sum of its proper divisors (1578001919).

17320203121 is a wasteful number, since it uses less digits than its factorization.

17320203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782496 (or 782483 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 17320203121 its reverse (12130202371), we get a palindrome (29450405492).

The spelling of 17320203121 in words is "seventeen billion, three hundred twenty million, two hundred three thousand, one hundred twenty-one".