201111002011 has 4 divisors (see below), whose sum is σ = 201206182072. Its totient is φ = 201015821952.

The previous prime is 201111001991. The next prime is 201111002023. The reversal of 201111002011 is 110200111102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110200111102 = 2 ⋅55100055551.

It is a cyclic number.

It is not a de Polignac number, because 201111002011 - 2⁹ = 201111001499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201111002041) 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, 47586861 + ... + 47591086.

It is an arithmetic number, because the mean of its divisors is an integer number (50301545518).

Almost surely, 2^201111002011 is an apocalyptic number.

201111002011 is a deficient number, since it is larger than the sum of its proper divisors (95180061).

201111002011 is an equidigital number, since it uses as much as digits as its factorization.

201111002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95180060.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 201111002011 its reverse (110200111102), we get a palindrome (311311113113).

The spelling of 201111002011 in words is "two hundred one billion, one hundred eleven million, two thousand, eleven".