11111100100001 has 16 divisors (see below), whose sum is σ = 12515144649216. Its totient is φ = 9772866000000.

The previous prime is 11111100099943. The next prime is 11111100100019. The reversal of 11111100100001 is 10000100111111.

It is a cyclic number.

It is not a de Polignac number, because 11111100100001 - 2¹⁰ = 11111100098977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11111100102001) 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, 2370500 + ... + 5276501.

It is an arithmetic number, because the mean of its divisors is an integer number (782196540576).

Almost surely, 2^{11111100100001} is an apocalyptic number.

11111100100001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11111100100001 is a deficient number, since it is larger than the sum of its proper divisors (1404044549215).

11111100100001 is a wasteful number, since it uses less digits than its factorization.

11111100100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7651304.

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

Adding to 11111100100001 its reverse (10000100111111), we get a palindrome (21111200211112).

The spelling of 11111100100001 in words is "eleven trillion, one hundred eleven billion, one hundred million, one hundred thousand, one".