201110123 has 4 divisors (see below), whose sum is σ = 202955280. Its totient is φ = 199264968.

The previous prime is 201110093. The next prime is 201110131. The reversal of 201110123 is 321011102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201110123 - 2²² = 196915819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201110023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922415 + ... + 922632.

It is an arithmetic number, because the mean of its divisors is an integer number (50738820).

Almost surely, 2^201110123 is an apocalyptic number.

201110123 is a deficient number, since it is larger than the sum of its proper divisors (1845157).

201110123 is a wasteful number, since it uses less digits than its factorization.

201110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845156.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 201110123 is about 14181.3300857148. The cubic root of 201110123 is about 585.8835583073.

Adding to 201110123 its reverse (321011102), we get a palindrome (522121225).

The spelling of 201110123 in words is "two hundred one million, one hundred ten thousand, one hundred twenty-three".