11002101000021 has 16 divisors (see below), whose sum is σ = 16305656371200. Its totient is φ = 7331922633024.

The previous prime is 11002101000019. The next prime is 11002101000031. The reversal of 11002101000021 is 12000010120011.

It is a happy number.

It is not a de Polignac number, because 11002101000021 - 2¹ = 11002101000019 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 11002100999967 and 11002101000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002101000031) 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, 78021781 + ... + 78162666.

It is an arithmetic number, because the mean of its divisors is an integer number (1019103523200).

Almost surely, 2^{11002101000021} is an apocalyptic number.

It is an amenable number.

11002101000021 is a deficient number, since it is larger than the sum of its proper divisors (5303555371179).

11002101000021 is a wasteful number, since it uses less digits than its factorization.

11002101000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156187065 (or 156187059 counting only the distinct ones).

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

Adding to 11002101000021 its reverse (12000010120011), we get a palindrome (23002111120032).

The spelling of 11002101000021 in words is "eleven trillion, two billion, one hundred one million, twenty-one", and thus it is an aban number.