202020217 has 8 divisors (see below), whose sum is σ = 243032000. Its totient is φ = 164046384.

The previous prime is 202020193. The next prime is 202020253. The reversal of 202020217 is 712020202.

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 202020217 - 2⁷ = 202020089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202020217.

It is not an unprimeable number, because it can be changed into a prime (202020317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759342 + ... + 759607.

It is an arithmetic number, because the mean of its divisors is an integer number (30379000).

Almost surely, 2^202020217 is an apocalyptic number.

It is an amenable number.

202020217 is a deficient number, since it is larger than the sum of its proper divisors (41011783).

202020217 is a wasteful number, since it uses less digits than its factorization.

202020217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518975.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 202020217 is about 14213.3816173351. The cubic root of 202020217 is about 586.7660048655.

Adding to 202020217 its reverse (712020202), we get a palindrome (914040419).

The spelling of 202020217 in words is "two hundred two million, twenty thousand, two hundred seventeen".