17220775873421 has 8 divisors (see below), whose sum is σ = 17712560902080. Its totient is φ = 16733140929792.

The previous prime is 17220775873417. The next prime is 17220775873439. The reversal of 17220775873421 is 12437857702271.

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 17220775873421 - 2² = 17220775873417 is a prime.

It is a super-3 number, since 3×17220775873421³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17220775873471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037512841 + ... + 1037529438.

It is an arithmetic number, because the mean of its divisors is an integer number (2214070112760).

Almost surely, 2^{17220775873421} is an apocalyptic number.

It is an amenable number.

17220775873421 is a deficient number, since it is larger than the sum of its proper divisors (491785028659).

17220775873421 is a wasteful number, since it uses less digits than its factorization.

17220775873421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075042515.

The product of its (nonzero) digits is 9219840, while the sum is 56.

The spelling of 17220775873421 in words is "seventeen trillion, two hundred twenty billion, seven hundred seventy-five million, eight hundred seventy-three thousand, four hundred twenty-one".