11100101111001 has 40 divisors (see below), whose sum is σ = 18989350244480. Its totient is φ = 6329890297152.

The previous prime is 11100101110927. The next prime is 11100101111003. The reversal of 11100101111001 is 10011110100111.

It is not a de Polignac number, because 11100101111001 - 2¹¹ = 11100101108953 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (11100101111003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19823356 + ... + 20375613.

It is an arithmetic number, because the mean of its divisors is an integer number (474733756112).

Almost surely, 2^{11100101111001} is an apocalyptic number.

It is an amenable number.

11100101111001 is a deficient number, since it is larger than the sum of its proper divisors (7889249133479).

11100101111001 is an equidigital number, since it uses as much as digits as its factorization.

11100101111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40199475 (or 40199466 counting only the distinct ones).

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

Adding to 11100101111001 its reverse (10011110100111), we get a palindrome (21111211211112).

The spelling of 11100101111001 in words is "eleven trillion, one hundred billion, one hundred one million, one hundred eleven thousand, one".