1000111001 has 12 divisors (see below), whose sum is σ = 1049018880. Its totient is φ = 953395080.

The previous prime is 1000110997. The next prime is 1000111027. The reversal of 1000111001 is 1001110001.

It is not a de Polignac number, because 1000111001 - 2² = 1000110997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000111051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161480 + ... + 167558.

It is an arithmetic number, because the mean of its divisors is an integer number (87418240).

Almost surely, 2^1000111001 is an apocalyptic number.

It is an amenable number.

1000111001 is a deficient number, since it is larger than the sum of its proper divisors (48907879).

1000111001 is an equidigital number, since it uses as much as digits as its factorization.

1000111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6436 (or 6413 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 5.

The square root of 1000111001 is about 31624.5316328954. The cubic root of 1000111001 is about 1000.0369989644.

Adding to 1000111001 its reverse (1001110001), we get a palindrome (2001221002).

The spelling of 1000111001 in words is "one billion, one hundred eleven thousand, one".