201123311201 has 16 divisors (see below), whose sum is σ = 207392970048. Its totient is φ = 194931878400.

The previous prime is 201123311183. The next prime is 201123311293. The reversal of 201123311201 is 102113321102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201123311201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201123311201.

It is not an unprimeable number, because it can be changed into a prime (201123311801) 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, 2877470 + ... + 2946536.

It is an arithmetic number, because the mean of its divisors is an integer number (12962060628).

Almost surely, 2^201123311201 is an apocalyptic number.

It is an amenable number.

201123311201 is a deficient number, since it is larger than the sum of its proper divisors (6269658847).

201123311201 is a wasteful number, since it uses less digits than its factorization.

201123311201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69632.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 201123311201 its reverse (102113321102), we get a palindrome (303236632303).

Subtracting from 201123311201 its reverse (102113321102), we obtain a palindrome (99009990099).

The spelling of 201123311201 in words is "two hundred one billion, one hundred twenty-three million, three hundred eleven thousand, two hundred one".