203320020221 has 2 divisors, whose sum is σ = 203320020222. Its totient is φ = 203320020220.

The previous prime is 203320020187. The next prime is 203320020223. The reversal of 203320020221 is 122020023302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152970943225 + 50349076996 = 391115^2 + 224386^2 .

It is a cyclic number.

It is not a de Polignac number, because 203320020221 - 2²⁶ = 203252911357 is a prime.

Together with 203320020223, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203320020221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203320020223) 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 as a sum of consecutive naturals, namely, 101660010110 + 101660010111.

It is an arithmetic number, because the mean of its divisors is an integer number (101660010111).

Almost surely, 2^203320020221 is an apocalyptic number.

It is an amenable number.

203320020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

203320020221 is an equidigital number, since it uses as much as digits as its factorization.

203320020221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 203320020221 its reverse (122020023302), we get a palindrome (325340043523).

The spelling of 203320020221 in words is "two hundred three billion, three hundred twenty million, twenty thousand, two hundred twenty-one".