2011001101 has 4 divisors (see below), whose sum is σ = 2048944572. Its totient is φ = 1973057632.

The previous prime is 2011001071. The next prime is 2011001131. The reversal of 2011001101 is 1011001102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1011001102 = 2 ⋅505500551.

It is an interprime number because it is at equal distance from previous prime (2011001071) and next prime (2011001131).

It can be written as a sum of positive squares in 2 ways, for example, as 660438601 + 1350562500 = 25699^2 + 36750^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011001101 - 2¹⁹ = 2010476813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011001131) 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, 18971656 + ... + 18971761.

It is an arithmetic number, because the mean of its divisors is an integer number (512236143).

Almost surely, 2^2011001101 is an apocalyptic number.

It is an amenable number.

2011001101 is a deficient number, since it is larger than the sum of its proper divisors (37943471).

2011001101 is an equidigital number, since it uses as much as digits as its factorization.

2011001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37943470.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 2011001101 is about 44844.1869253976. The cubic root of 2011001101 is about 1262.2269136622.

Adding to 2011001101 its reverse (1011001102), we get a palindrome (3022002203).

Subtracting from 2011001101 its reverse (1011001102), we obtain a palindrome (999999999).

It can be divided in two parts, 2011001 and 101, that added together give a palindrome (2011102).

The spelling of 2011001101 in words is "two billion, eleven million, one thousand, one hundred one".