201013111 has 4 divisors (see below), whose sum is σ = 216475672. Its totient is φ = 185550552.

The previous prime is 201013097. The next prime is 201013139. The reversal of 201013111 is 111310102.

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 201013111 - 2⁹ = 201012599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201013171) 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, 7731261 + ... + 7731286.

It is an arithmetic number, because the mean of its divisors is an integer number (54118918).

Almost surely, 2^201013111 is an apocalyptic number.

201013111 is a deficient number, since it is larger than the sum of its proper divisors (15462561).

201013111 is a wasteful number, since it uses less digits than its factorization.

201013111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15462560.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 201013111 is about 14177.9092605363. The cubic root of 201013111 is about 585.7893365006.

Adding to 201013111 its reverse (111310102), we get a palindrome (312323213).

The spelling of 201013111 in words is "two hundred one million, thirteen thousand, one hundred eleven".