201100122011 has 4 divisors (see below), whose sum is σ = 201170415024. Its totient is φ = 201029829000.

The previous prime is 201100122001. The next prime is 201100122121. The reversal of 201100122011 is 110221001102.

201100122011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110221001102 = 2 ⋅55110500551.

It is a cyclic number.

It is not a de Polignac number, because 201100122011 - 2¹⁸ = 201099859867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201100121983 and 201100122001.

It is not an unprimeable number, because it can be changed into a prime (201100122001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35142215 + ... + 35147936.

It is an arithmetic number, because the mean of its divisors is an integer number (50292603756).

Almost surely, 2^201100122011 is an apocalyptic number.

201100122011 is a deficient number, since it is larger than the sum of its proper divisors (70293013).

201100122011 is an equidigital number, since it uses as much as digits as its factorization.

201100122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70293012.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201100122011 its reverse (110221001102), we get a palindrome (311321123113).

The spelling of 201100122011 in words is "two hundred one billion, one hundred million, one hundred twenty-two thousand, eleven".