11110001011001 has 4 divisors (see below), whose sum is σ = 11110141020132. Its totient is φ = 11109861001872.

The previous prime is 11110001010989. The next prime is 11110001011051. The reversal of 11110001011001 is 10011010001111.

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 632971404025 + 10477029606976 = 795595^2 + 3236824^2 .

It is a cyclic number.

It is not a de Polignac number, because 11110001011001 - 2¹⁰ = 11110001009977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11110001011001.

It is not an unprimeable number, because it can be changed into a prime (11110001011051) 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, 69885470 + ... + 70044263.

It is an arithmetic number, because the mean of its divisors is an integer number (2777535255033).

Almost surely, 2^{11110001011001} is an apocalyptic number.

It is an amenable number.

11110001011001 is a deficient number, since it is larger than the sum of its proper divisors (140009131).

11110001011001 is an equidigital number, since it uses as much as digits as its factorization.

11110001011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140009130.

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

Adding to 11110001011001 its reverse (10011010001111), we get a palindrome (21121011012112).

The spelling of 11110001011001 in words is "eleven trillion, one hundred ten billion, one million, eleven thousand, one".