11001111011011 has 8 divisors (see below), whose sum is σ = 12003096996864. Its totient is φ = 9999439189320.

The previous prime is 11001111011003. The next prime is 11001111011017. The reversal of 11001111011011 is 11011011110011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11001111011011 - 2³ = 11001111011003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001111011017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78467815 + ... + 78607888.

It is an arithmetic number, because the mean of its divisors is an integer number (1500387124608).

Almost surely, 2^{11001111011011} is an apocalyptic number.

11001111011011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11001111011011 is a deficient number, since it is larger than the sum of its proper divisors (1001985985853).

11001111011011 is a wasteful number, since it uses less digits than its factorization.

11001111011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157082081.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 11001111011011 its reverse (11011011110011), we get a palindrome (22012122121022).

It can be divided in two parts, 110011 and 11011011, that multiplied together give a palindrome (1211332331121).

The spelling of 11001111011011 in words is "eleven trillion, one billion, one hundred eleven million, eleven thousand, eleven".