11100001 has 16 divisors (see below), whose sum is σ = 12475008. Its totient is φ = 9792000.

The previous prime is 11099999. The next prime is 11100013. The reversal of 11100001 is 10000111.

It is a cyclic number.

It is not a de Polignac number, because 11100001 - 2¹ = 11099999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11100041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107716 + ... + 107818.

It is an arithmetic number, because the mean of its divisors is an integer number (779688).

Almost surely, 2^11100001 is an apocalyptic number.

11100001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11100001 is a deficient number, since it is larger than the sum of its proper divisors (1375007).

11100001 is a wasteful number, since it uses less digits than its factorization.

11100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312.

The product of its (nonzero) digits is 1, while the sum is 4.

The square root of 11100001 is about 3331.6663998666. Note that the first 3 decimals coincide. The cubic root of 11100001 is about 223.0699171464.

Adding to 11100001 its reverse (10000111), we get a palindrome (21100112).

Multiplying 11100001 by its reverse (10000111), we get a palindrome (111001242100111).

It can be divided in two parts, 11 and 100001, that multiplied together give a palindrome (1100011).

The spelling of 11100001 in words is "eleven million, one hundred thousand, one".