11101011001009 has 4 divisors (see below), whose sum is σ = 11101366230516. Its totient is φ = 11100655771504.

The previous prime is 11101011000983. The next prime is 11101011001049. The reversal of 11101011001009 is 90010011010111.

11101011001009 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.

It can be written as a sum of positive squares in 2 ways, for example, as 8704388102400 + 2396622898609 = 2950320^2 + 1548103^2 .

It is a cyclic number.

It is not a de Polignac number, because 11101011001009 - 2²⁷ = 11100876783281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101011000983 and 11101011001001.

It is not an unprimeable number, because it can be changed into a prime (11101011001049) 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, 177567874 + ... + 177630379.

It is an arithmetic number, because the mean of its divisors is an integer number (2775341557629).

Almost surely, 2^{11101011001009} is an apocalyptic number.

It is an amenable number.

11101011001009 is a deficient number, since it is larger than the sum of its proper divisors (355229507).

11101011001009 is an equidigital number, since it uses as much as digits as its factorization.

11101011001009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355229506.

The product of its (nonzero) digits is 9, while the sum is 16.

The spelling of 11101011001009 in words is "eleven trillion, one hundred one billion, eleven million, one thousand, nine".