204010123111 has 2 divisors, whose sum is σ = 204010123112. Its totient is φ = 204010123110.

The previous prime is 204010123091. The next prime is 204010123117. The reversal of 204010123111 is 111321010402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204010123111 - 2¹⁵ = 204010090343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204010123117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102005061555 + 102005061556.

It is an arithmetic number, because the mean of its divisors is an integer number (102005061556).

Almost surely, 2^204010123111 is an apocalyptic number.

204010123111 is a deficient number, since it is larger than the sum of its proper divisors (1).

204010123111 is an equidigital number, since it uses as much as digits as its factorization.

204010123111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 204010123111 its reverse (111321010402), we get a palindrome (315331133513).

The spelling of 204010123111 in words is "two hundred four billion, ten million, one hundred twenty-three thousand, one hundred eleven".