21103334010 has 192 divisors, whose sum is σ = 65041367040. Its totient is φ = 4690224000.

The previous prime is 21103334009. The next prime is 21103334039. The reversal of 21103334010 is 1043330112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 565015 + ... + 601205.

It is an arithmetic number, because the mean of its divisors is an integer number (338757120).

Almost surely, 2^21103334010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21103334010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32520683520).

21103334010 is an abundant number, since it is smaller than the sum of its proper divisors (43938033030).

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

21103334010 is a wasteful number, since it uses less digits than its factorization.

21103334010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36265 (or 36262 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21103334010 its reverse (1043330112), we get a palindrome (22146664122).

The spelling of 21103334010 in words is "twenty-one billion, one hundred three million, three hundred thirty-four thousand, ten".