201110023123 has 2 divisors, whose sum is σ = 201110023124. Its totient is φ = 201110023122.

The previous prime is 201110023117. The next prime is 201110023207. The reversal of 201110023123 is 321320011102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201110023123 - 2⁵ = 201110023091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201110023097 and 201110023106.

It is not a weakly prime, because it can be changed into another prime (201110023423) 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, 100555011561 + 100555011562.

It is an arithmetic number, because the mean of its divisors is an integer number (100555011562).

Almost surely, 2^201110023123 is an apocalyptic number.

201110023123 is a deficient number, since it is larger than the sum of its proper divisors (1).

201110023123 is an equidigital number, since it uses as much as digits as its factorization.

201110023123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 201110023123 its reverse (321320011102), we get a palindrome (522430034225).

The spelling of 201110023123 in words is "two hundred one billion, one hundred ten million, twenty-three thousand, one hundred twenty-three".