201100011011 has 4 divisors (see below), whose sum is σ = 201100910712. Its totient is φ = 201099111312.

The previous prime is 201100010977. The next prime is 201100011029. The reversal of 201100011011 is 110110001102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 110110001102 = 2 ⋅55055000551.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201100011011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201100011011.

It is not an unprimeable number, because it can be changed into a prime (201100010011) 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, 171575 + ... + 656991.

It is an arithmetic number, because the mean of its divisors is an integer number (50275227678).

Almost surely, 2^201100011011 is an apocalyptic number.

201100011011 is a deficient number, since it is larger than the sum of its proper divisors (899701).

201100011011 is an equidigital number, since it uses as much as digits as its factorization.

201100011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899700.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 201100011011 its reverse (110110001102), we get a palindrome (311210012113).

Subtracting from 201100011011 its reverse (110110001102), we obtain a palindrome (90990009909).

It can be divided in two parts, 20110001101 and 1, that added together give a palindrome (20110001102).

The spelling of 201100011011 in words is "two hundred one billion, one hundred million, eleven thousand, eleven".