1100001011001 has 4 divisors (see below), whose sum is σ = 1466668014672. Its totient is φ = 733334007332.

The previous prime is 1100001010993. The next prime is 1100001011009. The reversal of 1100001011001 is 1001101000011.

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 an interprime number because it is at equal distance from previous prime (1100001010993) and next prime (1100001011009).

It is a cyclic number.

It is not a de Polignac number, because 1100001011001 - 2³ = 1100001010993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1100001011009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183333501831 + ... + 183333501836.

It is an arithmetic number, because the mean of its divisors is an integer number (366667003668).

Almost surely, 2^{1100001011001} is an apocalyptic number.

It is an amenable number.

1100001011001 is a deficient number, since it is larger than the sum of its proper divisors (366667003671).

1100001011001 is an equidigital number, since it uses as much as digits as its factorization.

1100001011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366667003670.

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

Adding to 1100001011001 its reverse (1001101000011), we get a palindrome (2101102011012).

It can be divided in two parts, 11000010 and 11001, that added together give a palindrome (11011011).

The spelling of 1100001011001 in words is "one trillion, one hundred billion, one million, eleven thousand, one".