11001001001111 has 4 divisors (see below), whose sum is σ = 12001092001224. Its totient is φ = 10000910001000.

The previous prime is 11001001001063. The next prime is 11001001001141. The reversal of 11001001001111 is 11110010010011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11001001001111 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 (11001001001141) 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, 500045500040 + ... + 500045500061.

It is an arithmetic number, because the mean of its divisors is an integer number (3000273000306).

Almost surely, 2^{11001001001111} is an apocalyptic number.

11001001001111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11001001001111 is a deficient number, since it is larger than the sum of its proper divisors (1000091000113).

11001001001111 is a wasteful number, since it uses less digits than its factorization.

11001001001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000091000112.

The product of its (nonzero) digits is 1, while the sum is 8.

Adding to 11001001001111 its reverse (11110010010011), we get a palindrome (22111011011122).

It can be divided in two parts, 110010010011 and 11, that multiplied together give a palindrome (1210110110121).

The spelling of 11001001001111 in words is "eleven trillion, one billion, one million, one thousand, one hundred eleven".