11001043001 has 12 divisors (see below), whose sum is σ = 11915326908. Its totient is φ = 10152290304.

The previous prime is 11001042979. The next prime is 11001043013. The reversal of 11001043001 is 10034010011.

It can be written as a sum of positive squares in 6 ways, for example, as 179776 + 11000863225 = 424^2 + 104885^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11001043001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001043061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1312841 + ... + 1321193.

It is an arithmetic number, because the mean of its divisors is an integer number (992943909).

Almost surely, 2^11001043001 is an apocalyptic number.

It is an amenable number.

11001043001 is a deficient number, since it is larger than the sum of its proper divisors (914283907).

11001043001 is an equidigital number, since it uses as much as digits as its factorization.

11001043001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16172 (or 16159 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 11001043001 its reverse (10034010011), we get a palindrome (21035053012).

The spelling of 11001043001 in words is "eleven billion, one million, forty-three thousand, one".