203211223247 has 2 divisors, whose sum is σ = 203211223248. Its totient is φ = 203211223246.

The previous prime is 203211223207. The next prime is 203211223249. The reversal of 203211223247 is 742322112302.

203211223247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203211223247 - 2⁶ = 203211223183 is a prime.

Together with 203211223249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203211223249) 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, 101605611623 + 101605611624.

It is an arithmetic number, because the mean of its divisors is an integer number (101605611624).

Almost surely, 2^203211223247 is an apocalyptic number.

203211223247 is a deficient number, since it is larger than the sum of its proper divisors (1).

203211223247 is an equidigital number, since it uses as much as digits as its factorization.

203211223247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

Adding to 203211223247 its reverse (742322112302), we get a palindrome (945533335549).

The spelling of 203211223247 in words is "two hundred three billion, two hundred eleven million, two hundred twenty-three thousand, two hundred forty-seven".