21331113210000 has 400 divisors, whose sum is σ = 83466287488320. Its totient is φ = 5171178240000.

The previous prime is 21331113209971. The next prime is 21331113210059. The reversal of 21331113210000 is 1231113312.

21331113210000 is a `hidden beast` number, since 2 + 1 + 331 + 11 + 321 + 0 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (400).

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 79 ways as a sum of consecutive naturals, for example, 621097 + ... + 6561096.

Almost surely, 2^{21331113210000} is an apocalyptic number.

21331113210000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21331113210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41733143744160).

21331113210000 is an abundant number, since it is smaller than the sum of its proper divisors (62135174278320).

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

21331113210000 is a wasteful number, since it uses less digits than its factorization.

21331113210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7182241 (or 7182214 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21331113210000 its reverse (1231113312), we get a palindrome (21332344323312).

The spelling of 21331113210000 in words is "twenty-one trillion, three hundred thirty-one billion, one hundred thirteen million, two hundred ten thousand".