11001020001001 has 4 divisors (see below), whose sum is σ = 11001065737104. Its totient is φ = 11000974264900.

The previous prime is 11001020000951. The next prime is 11001020001019. The reversal of 11001020001001 is 10010002010011.

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 a de Polignac number, because none of the positive numbers 2^k-11001020001001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001020001061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22505335 + ... + 22988956.

It is an arithmetic number, because the mean of its divisors is an integer number (2750266434276).

Almost surely, 2^{11001020001001} is an apocalyptic number.

It is an amenable number.

11001020001001 is a deficient number, since it is larger than the sum of its proper divisors (45736103).

11001020001001 is an equidigital number, since it uses as much as digits as its factorization.

11001020001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45736102.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 11001020001001 its reverse (10010002010011), we get a palindrome (21011022011012).

The spelling of 11001020001001 in words is "eleven trillion, one billion, twenty million, one thousand, one".