204442404013123 has 2 divisors, whose sum is σ = 204442404013124. Its totient is φ = 204442404013122.

The previous prime is 204442404013087. The next prime is 204442404013139. The reversal of 204442404013123 is 321310404244402.

204442404013123 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 204442404013123 - 2³³ = 204433814078531 is a prime.

It is a super-2 number, since 2×204442404013123² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (204442404013193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102221202006561 + 102221202006562.

It is an arithmetic number, because the mean of its divisors is an integer number (102221202006562).

Almost surely, 2^{204442404013123} is an apocalyptic number.

204442404013123 is a deficient number, since it is larger than the sum of its proper divisors (1).

204442404013123 is an equidigital number, since it uses as much as digits as its factorization.

204442404013123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 204442404013123 its reverse (321310404244402), we get a palindrome (525752808257525).

The spelling of 204442404013123 in words is "two hundred four trillion, four hundred forty-two billion, four hundred four million, thirteen thousand, one hundred twenty-three".