201111112123 has 8 divisors (see below), whose sum is σ = 212945946192. Its totient is φ = 189276807936.

The previous prime is 201111112117. The next prime is 201111112127. The reversal of 201111112123 is 321211111102.

It is a happy number.

201111112123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201111112123 - 2⁵ = 201111112091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201111112097 and 201111112106.

It is not an unprimeable number, because it can be changed into a prime (201111112127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862536 + ... + 1070602.

It is an arithmetic number, because the mean of its divisors is an integer number (26618243274).

Almost surely, 2^201111112123 is an apocalyptic number.

201111112123 is a deficient number, since it is larger than the sum of its proper divisors (11834834069).

201111112123 is a wasteful number, since it uses less digits than its factorization.

201111112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264941.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 201111112123 its reverse (321211111102), we get a palindrome (522322223225).

The spelling of 201111112123 in words is "two hundred one billion, one hundred eleven million, one hundred twelve thousand, one hundred twenty-three".