201111111210201 has 64 divisors (see below), whose sum is σ = 280332425207808. Its totient is φ = 128140535115008.

The previous prime is 201111111210173. The next prime is 201111111210203. The reversal of 201111111210201 is 102012111111102.

It is a cyclic number.

It is not a de Polignac number, because 201111111210201 - 2⁷ = 201111111210073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201111111210203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6441105076 + ... + 6441136298.

It is an arithmetic number, because the mean of its divisors is an integer number (4380194143872).

Almost surely, 2^{201111111210201} is an apocalyptic number.

It is an amenable number.

201111111210201 is a deficient number, since it is larger than the sum of its proper divisors (79221313997607).

201111111210201 is a wasteful number, since it uses less digits than its factorization.

201111111210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35350.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 201111111210201 its reverse (102012111111102), we get a palindrome (303123222321303).

Subtracting from 201111111210201 its reverse (102012111111102), we obtain a palindrome (99099000099099).

The spelling of 201111111210201 in words is "two hundred one trillion, one hundred eleven billion, one hundred eleven million, two hundred ten thousand, two hundred one".