11100001011001 has 16 divisors (see below), whose sum is σ = 12742905498624. Its totient is φ = 9471396072384.

The previous prime is 11100001010999. The next prime is 11100001011061. The reversal of 11100001011001 is 10011010000111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11100001011001 - 2¹ = 11100001010999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is not an unprimeable number, because it can be changed into a prime (11100001011061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120296055 + ... + 120388291.

It is an arithmetic number, because the mean of its divisors is an integer number (796431593664).

Almost surely, 2^{11100001011001} is an apocalyptic number.

It is an amenable number.

11100001011001 is a deficient number, since it is larger than the sum of its proper divisors (1642904487623).

11100001011001 is an equidigital number, since it uses as much as digits as its factorization.

11100001011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169560.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 11100001011001 its reverse (10011010000111), we get a palindrome (21111011011112).

The spelling of 11100001011001 in words is "eleven trillion, one hundred billion, one million, eleven thousand, one".