11002110021 has 12 divisors (see below), whose sum is σ = 18162213472. Its totient is φ = 6286919976.

The previous prime is 11002110011. The next prime is 11002110029. The reversal of 11002110021 is 12001120011.

It is a happy number.

It is not a de Polignac number, because 11002110021 - 2²⁷ = 10867892293 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11002109985 and 11002110012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002110029) 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, 87318271 + ... + 87318396.

Almost surely, 2^11002110021 is an apocalyptic number.

It is an amenable number.

11002110021 is a deficient number, since it is larger than the sum of its proper divisors (7160103451).

11002110021 is a wasteful number, since it uses less digits than its factorization.

11002110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174636680 (or 174636677 counting only the distinct ones).

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

Adding to 11002110021 its reverse (12001120011), we get a palindrome (23003230032).

The spelling of 11002110021 in words is "eleven billion, two million, one hundred ten thousand, twenty-one".