2101101011 has 4 divisors (see below), whose sum is σ = 2173552800. Its totient is φ = 2028649224.

The previous prime is 2101100999. The next prime is 2101101029. The reversal of 2101101011 is 1101011012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2101101011 - 2¹⁸ = 2100838867 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 2101101011.

It is not an unprimeable number, because it can be changed into a prime (2101101031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36225851 + ... + 36225908.

It is an arithmetic number, because the mean of its divisors is an integer number (543388200).

Almost surely, 2^2101101011 is an apocalyptic number.

2101101011 is a deficient number, since it is larger than the sum of its proper divisors (72451789).

2101101011 is an equidigital number, since it uses as much as digits as its factorization.

2101101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72451788.

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

The square root of 2101101011 is about 45837.7683902696. The cubic root of 2101101011 is about 1280.8029245770.

Adding to 2101101011 its reverse (1101011012), we get a palindrome (3202112023).

The spelling of 2101101011 in words is "two billion, one hundred one million, one hundred one thousand, eleven".