201122111202011 has 4 divisors (see below), whose sum is σ = 201123157048224. Its totient is φ = 201121065355800.

The previous prime is 201122111201899. The next prime is 201122111202037. The reversal of 201122111202011 is 110202111221102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201122111202011 is a prime.

It is a super-2 number, since 2×201122111202011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201122111202091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522634595 + ... + 523019276.

It is an arithmetic number, because the mean of its divisors is an integer number (50280789262056).

Almost surely, 2^{201122111202011} is an apocalyptic number.

201122111202011 is a deficient number, since it is larger than the sum of its proper divisors (1045846213).

201122111202011 is a wasteful number, since it uses less digits than its factorization.

201122111202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045846212.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201122111202011 its reverse (110202111221102), we get a palindrome (311324222423113).

The spelling of 201122111202011 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred eleven million, two hundred two thousand, eleven".