10011001001 has 4 divisors (see below), whose sum is σ = 10012373904. Its totient is φ = 10009628100.

The previous prime is 10011000931. The next prime is 10011001003. The reversal of 10011001001 is 10010011001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10011001001 - 2¹⁴ = 10010984617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10011001003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675455 + ... + 690116.

It is an arithmetic number, because the mean of its divisors is an integer number (2503093476).

Almost surely, 2^10011001001 is an apocalyptic number.

It is an amenable number.

10011001001 is a deficient number, since it is larger than the sum of its proper divisors (1372903).

10011001001 is an equidigital number, since it uses as much as digits as its factorization.

10011001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372902.

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

Adding to 10011001001 its reverse (10010011001), we get a palindrome (20021012002).

It can be divided in two parts, 1001 and 1001001, that multiplied together give a palindrome (1002002001).

The spelling of 10011001001 in words is "ten billion, eleven million, one thousand, one".