217020201 has 8 divisors (see below), whose sum is σ = 290860320. Its totient is φ = 143930112.

The previous prime is 217020191. The next prime is 217020211. The reversal of 217020201 is 102020712.

It is an interprime number because it is at equal distance from previous prime (217020191) and next prime (217020211).

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

It is not a de Polignac number, because 217020201 - 2¹⁰ = 217019177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (217020211) 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, 186831 + ... + 187988.

It is an arithmetic number, because the mean of its divisors is an integer number (36357540).

Almost surely, 2^217020201 is an apocalyptic number.

It is an amenable number.

217020201 is a deficient number, since it is larger than the sum of its proper divisors (73840119).

217020201 is a wasteful number, since it uses less digits than its factorization.

217020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375015.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 217020201 is about 14731.6055133173. The cubic root of 217020201 is about 600.9431472342.

Adding to 217020201 its reverse (102020712), we get a palindrome (319040913).

The spelling of 217020201 in words is "two hundred seventeen million, twenty thousand, two hundred one".