201110012111 has 4 divisors (see below), whose sum is σ = 201375679992. Its totient is φ = 200844344232.

The previous prime is 201110012099. The next prime is 201110012137. The reversal of 201110012111 is 111210011102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201110012111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201110012092 and 201110012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201110012171) 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, 132832805 + ... + 132834318.

It is an arithmetic number, because the mean of its divisors is an integer number (50343919998).

Almost surely, 2^201110012111 is an apocalyptic number.

201110012111 is a deficient number, since it is larger than the sum of its proper divisors (265667881).

201110012111 is an equidigital number, since it uses as much as digits as its factorization.

201110012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265667880.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 201110012111 its reverse (111210011102), we get a palindrome (312320023213).

The spelling of 201110012111 in words is "two hundred one billion, one hundred ten million, twelve thousand, one hundred eleven".