1000011001 has 8 divisors (see below), whose sum is σ = 1109412000. Its totient is φ = 893691840.

The previous prime is 1000010987. The next prime is 1000011007. The reversal of 1000011001 is 1001100001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000011001 - 2⁵ = 1000010969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000011007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769776 + ... + 771073.

It is an arithmetic number, because the mean of its divisors is an integer number (138676500).

Almost surely, 2^1000011001 is an apocalyptic number.

1000011001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000011001 is a deficient number, since it is larger than the sum of its proper divisors (109400999).

1000011001 is a wasteful number, since it uses less digits than its factorization.

1000011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540919.

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

The square root of 1000011001 is about 31622.9505422881. The cubic root of 1000011001 is about 1000.0036669866.

Adding to 1000011001 its reverse (1001100001), we get a palindrome (2001111002).

It can be divided in two parts, 100001 and 1001, that multiplied together give a palindrome (100101001).

The spelling of 1000011001 in words is "one billion, eleven thousand, one".