2110002000021 has 32 divisors (see below), whose sum is σ = 3134952576000. Its totient is φ = 1402609191984.

The previous prime is 2110001999999. The next prime is 2110002000077. The reversal of 2110002000021 is 1200002000112.

It is not a de Polignac number, because 2110002000021 - 2¹⁰ = 2110001998997 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 = 2110001999967 and 2110002000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110002000521) 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 31 ways as a sum of consecutive naturals, for example, 45237250 + ... + 45283868.

It is an arithmetic number, because the mean of its divisors is an integer number (97967268000).

Almost surely, 2^{2110002000021} is an apocalyptic number.

It is an amenable number.

2110002000021 is a deficient number, since it is larger than the sum of its proper divisors (1024950575979).

2110002000021 is a wasteful number, since it uses less digits than its factorization.

2110002000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51430 (or 51424 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2110002000021 its reverse (1200002000112), we get a palindrome (3310004000133).

Subtracting from 2110002000021 its reverse (1200002000112), we obtain a palindrome (909999999909).

The spelling of 2110002000021 in words is "two trillion, one hundred ten billion, two million, twenty-one", and thus it is an aban number.