203022212221 has 2 divisors, whose sum is σ = 203022212222. Its totient is φ = 203022212220.

The previous prime is 203022212219. The next prime is 203022212257. The reversal of 203022212221 is 122212220302.

203022212221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131813289721 + 71208922500 = 363061^2 + 266850^2 .

It is a cyclic number.

It is not a de Polignac number, because 203022212221 - 2¹ = 203022212219 is a prime.

Together with 203022212219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203022212621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101511106110 + 101511106111.

It is an arithmetic number, because the mean of its divisors is an integer number (101511106111).

Almost surely, 2^203022212221 is an apocalyptic number.

It is an amenable number.

203022212221 is a deficient number, since it is larger than the sum of its proper divisors (1).

203022212221 is an equidigital number, since it uses as much as digits as its factorization.

203022212221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 203022212221 its reverse (122212220302), we get a palindrome (325234432523).

The spelling of 203022212221 in words is "two hundred three billion, twenty-two million, two hundred twelve thousand, two hundred twenty-one".