202020221102197 has 2 divisors, whose sum is σ = 202020221102198. Its totient is φ = 202020221102196.

The previous prime is 202020221102159. The next prime is 202020221102237. The reversal of 202020221102197 is 791201122020202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162183434235876 + 39836786866321 = 12735126^2 + 6311639^2 .

It is a cyclic number.

It is not a de Polignac number, because 202020221102197 - 2¹¹ = 202020221100149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202020221108197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010110551098 + 101010110551099.

It is an arithmetic number, because the mean of its divisors is an integer number (101010110551099).

Almost surely, 2^{202020221102197} is an apocalyptic number.

It is an amenable number.

202020221102197 is a deficient number, since it is larger than the sum of its proper divisors (1).

202020221102197 is an equidigital number, since it uses as much as digits as its factorization.

202020221102197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

Adding to 202020221102197 its reverse (791201122020202), we get a palindrome (993221343122399).

The spelling of 202020221102197 in words is "two hundred two trillion, twenty billion, two hundred twenty-one million, one hundred two thousand, one hundred ninety-seven".