1111100001 has 16 divisors (see below), whose sum is σ = 1635621120. Its totient is φ = 665279120.

The previous prime is 1111099981. The next prime is 1111100021. The reversal of 1111100001 is 1000011111.

It is an interprime number because it is at equal distance from previous prime (1111099981) and next prime (1111100021).

It is not a de Polignac number, because 1111100001 - 2⁶ = 1111099937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111100021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200091 + ... + 205568.

It is an arithmetic number, because the mean of its divisors is an integer number (102226320).

Almost surely, 2^1111100001 is an apocalyptic number.

1111100001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111100001 is a deficient number, since it is larger than the sum of its proper divisors (524521119).

1111100001 is a wasteful number, since it uses less digits than its factorization.

1111100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405756.

The product of its (nonzero) digits is 1, while the sum is 6.

The square root of 1111100001 is about 33333.1666812501. The cubic root of 1111100001 is about 1035.7407164699.

Adding to 1111100001 its reverse (1000011111), we get a palindrome (2111111112).

It can be divided in two parts, 1111 and 100001, that multiplied together give a palindrome (111101111).

The spelling of 1111100001 in words is "one billion, one hundred eleven million, one hundred thousand, one".