21112102000002 has 128 divisors (see below), whose sum is σ = 48324511872000. Its totient is φ = 6095146358016.

The previous prime is 21112102000001. The next prime is 21112102000103. The reversal of 21112102000002 is 20000020121112.

It is not an unprimeable number, because it can be changed into a prime (21112102000001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 773351749 + ... + 773379047.

It is an arithmetic number, because the mean of its divisors is an integer number (377535249000).

Almost surely, 2^{21112102000002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21112102000002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24162255936000).

21112102000002 is an abundant number, since it is smaller than the sum of its proper divisors (27212409871998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21112102000002 is a wasteful number, since it uses less digits than its factorization.

21112102000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32320.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21112102000002 its reverse (20000020121112), we get a palindrome (41112122121114).

The spelling of 21112102000002 in words is "twenty-one trillion, one hundred twelve billion, one hundred two million, two", and thus it is an aban number.