201111011012111 has 16 divisors (see below), whose sum is σ = 216010552623840. Its totient is φ = 186653627596800.

The previous prime is 201111011012099. The next prime is 201111011012137. The reversal of 201111011012111 is 111210110111102.

It is a cyclic number.

It is not a de Polignac number, because 201111011012111 - 2⁶ = 201111011012047 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 (201111011012161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147697490 + ... + 149052911.

It is an arithmetic number, because the mean of its divisors is an integer number (13500659538990).

Almost surely, 2^{201111011012111} is an apocalyptic number.

201111011012111 is a deficient number, since it is larger than the sum of its proper divisors (14899541611729).

201111011012111 is a wasteful number, since it uses less digits than its factorization.

201111011012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296751146.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 201111011012111 its reverse (111210110111102), we get a palindrome (312321121123213).

The spelling of 201111011012111 in words is "two hundred one trillion, one hundred eleven billion, eleven million, twelve thousand, one hundred eleven".