11001001101001 has 8 divisors (see below), whose sum is σ = 11257398456480. Its totient is φ = 10744629205632.

The previous prime is 11001001100989. The next prime is 11001001101017. The reversal of 11001001101001 is 10010110010011.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11001001101001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001001101301) 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 7 ways as a sum of consecutive naturals, for example, 5489395 + ... + 7220488.

It is an arithmetic number, because the mean of its divisors is an integer number (1407174807060).

Almost surely, 2^{11001001101001} is an apocalyptic number.

It is an amenable number.

11001001101001 is a deficient number, since it is larger than the sum of its proper divisors (256397355479).

11001001101001 is a wasteful number, since it uses less digits than its factorization.

11001001101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12730055.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 11001001101001 its reverse (10010110010011), we get a palindrome (21011111111012).

The spelling of 11001001101001 in words is "eleven trillion, one billion, one million, one hundred one thousand, one".