204203422123 has 2 divisors, whose sum is σ = 204203422124. Its totient is φ = 204203422122.

The previous prime is 204203422103. The next prime is 204203422141. The reversal of 204203422123 is 321224302402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204203422123 - 2¹⁷ = 204203291051 is a prime.

It is not a weakly prime, because it can be changed into another prime (204203422103) 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, 102101711061 + 102101711062.

It is an arithmetic number, because the mean of its divisors is an integer number (102101711062).

Almost surely, 2^204203422123 is an apocalyptic number.

204203422123 is a deficient number, since it is larger than the sum of its proper divisors (1).

204203422123 is an equidigital number, since it uses as much as digits as its factorization.

204203422123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 204203422123 its reverse (321224302402), we get a palindrome (525427724525).

The spelling of 204203422123 in words is "two hundred four billion, two hundred three million, four hundred twenty-two thousand, one hundred twenty-three".