21010110200010 has 128 divisors (see below), whose sum is σ = 56109763031040. Its totient is φ = 5594420354112.

The previous prime is 21010110200003. The next prime is 21010110200059. The reversal of 21010110200010 is 1000201101012.

It is a happy number.

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 = 21010110199965 and 21010110200001.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 763240867 + ... + 763268393.

It is an arithmetic number, because the mean of its divisors is an integer number (438357523680).

Almost surely, 2^{21010110200010} is an apocalyptic number.

21010110200010 is an abundant number, since it is smaller than the sum of its proper divisors (35099652831030).

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

21010110200010 is a wasteful number, since it uses less digits than its factorization.

21010110200010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31617 (or 31611 counting only the distinct ones).

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

Adding to 21010110200010 its reverse (1000201101012), we get a palindrome (22010311301022).

The spelling of 21010110200010 in words is "twenty-one trillion, ten billion, one hundred ten million, two hundred thousand, ten".