11011110011001 has 12 divisors (see below), whose sum is σ = 16010267391040. Its totient is φ = 7292125834200.

The previous prime is 11011110010987. The next prime is 11011110011023. The reversal of 11011110011001 is 10011001111011.

It is not a de Polignac number, because 11011110011001 - 2²³ = 11011101622393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011110011051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4051179661 + ... + 4051182378.

Almost surely, 2^{11011110011001} is an apocalyptic number.

It is an amenable number.

11011110011001 is a deficient number, since it is larger than the sum of its proper divisors (4999157380039).

11011110011001 is a wasteful number, since it uses less digits than its factorization.

11011110011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8102362196 (or 8102362193 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 11011110011001 its reverse (10011001111011), we get a palindrome (21022111122012).

The spelling of 11011110011001 in words is "eleven trillion, eleven billion, one hundred ten million, eleven thousand, one".