201113111 has 8 divisors (see below), whose sum is σ = 216962064. Its totient is φ = 185710720.

The previous prime is 201113069. The next prime is 201113113. The reversal of 201113111 is 111311102.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-201113111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201113092 and 201113101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201113113) 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, 110705 + ... + 112506.

It is an arithmetic number, because the mean of its divisors is an integer number (27120258).

Almost surely, 2^201113111 is an apocalyptic number.

201113111 is a deficient number, since it is larger than the sum of its proper divisors (15848953).

201113111 is a wasteful number, since it uses less digits than its factorization.

201113111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223281.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 201113111 is about 14181.4354351032. The cubic root of 201113111 is about 585.8864598874.

Adding to 201113111 its reverse (111311102), we get a palindrome (312424213).

The spelling of 201113111 in words is "two hundred one million, one hundred thirteen thousand, one hundred eleven".