202032103212221 has 2 divisors, whose sum is σ = 202032103212222. Its totient is φ = 202032103212220.

The previous prime is 202032103212193. The next prime is 202032103212283. The reversal of 202032103212221 is 122212301230202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158517895171321 + 43514208040900 = 12590389^2 + 6596530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202032103212221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202032103212421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101016051606110 + 101016051606111.

It is an arithmetic number, because the mean of its divisors is an integer number (101016051606111).

Almost surely, 2^{202032103212221} is an apocalyptic number.

It is an amenable number.

202032103212221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202032103212221 is an equidigital number, since it uses as much as digits as its factorization.

202032103212221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 202032103212221 its reverse (122212301230202), we get a palindrome (324244404442423).

The spelling of 202032103212221 in words is "two hundred two trillion, thirty-two billion, one hundred three million, two hundred twelve thousand, two hundred twenty-one".