203267468821 has 2 divisors, whose sum is σ = 203267468822. Its totient is φ = 203267468820.

The previous prime is 203267468819. The next prime is 203267468891. The reversal of 203267468821 is 128864762302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151811536900 + 51455931921 = 389630^2 + 226839^2 .

It is a cyclic number.

It is not a de Polignac number, because 203267468821 - 2¹ = 203267468819 is a prime.

Together with 203267468819, 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 (203267468891) 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, 101633734410 + 101633734411.

It is an arithmetic number, because the mean of its divisors is an integer number (101633734411).

Almost surely, 2^203267468821 is an apocalyptic number.

It is an amenable number.

203267468821 is a deficient number, since it is larger than the sum of its proper divisors (1).

203267468821 is an equidigital number, since it uses as much as digits as its factorization.

203267468821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 203267468821 in words is "two hundred three billion, two hundred sixty-seven million, four hundred sixty-eight thousand, eight hundred twenty-one".