11111000101001 has 4 divisors (see below), whose sum is σ = 11276835923472. Its totient is φ = 10945164278532.

The previous prime is 11111000100971. The next prime is 11111000101027. The reversal of 11111000101001 is 10010100011111.

11111000101001 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11111000101001 - 2¹⁰ = 11111000099977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11111000101001.

It is not an unprimeable number, because it can be changed into a prime (11111000101081) 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, 82917911135 + ... + 82917911268.

It is an arithmetic number, because the mean of its divisors is an integer number (2819208980868).

Almost surely, 2^{11111000101001} is an apocalyptic number.

It is an amenable number.

11111000101001 is a deficient number, since it is larger than the sum of its proper divisors (165835822471).

11111000101001 is an equidigital number, since it uses as much as digits as its factorization.

11111000101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165835822470.

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

Adding to 11111000101001 its reverse (10010100011111), we get a palindrome (21121100112112).

The spelling of 11111000101001 in words is "eleven trillion, one hundred eleven billion, one hundred one thousand, one".