11002121001 has 16 divisors (see below), whose sum is σ = 17008110720. Its totient is φ = 7015844880.

The previous prime is 11002120973. The next prime is 11002121003. The reversal of 11002121001 is 10012120011.

It is a happy number.

11002121001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11002121001 - 2¹⁰ = 11002119977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11002121003) 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 15 ways as a sum of consecutive naturals, for example, 8857770 + ... + 8859011.

It is an arithmetic number, because the mean of its divisors is an integer number (1063006920).

Almost surely, 2^11002121001 is an apocalyptic number.

It is an amenable number.

11002121001 is a deficient number, since it is larger than the sum of its proper divisors (6005989719).

11002121001 is a wasteful number, since it uses less digits than its factorization.

11002121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17716813 (or 17716807 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11002121001 its reverse (10012120011), we get a palindrome (21014241012).

The spelling of 11002121001 in words is "eleven billion, two million, one hundred twenty-one thousand, one".