21331301220000 has 360 divisors, whose sum is σ = 75826634659776. Its totient is φ = 5686486848000.

The previous prime is 21331301219953. The next prime is 21331301220017. The reversal of 21331301220000 is 2210313312.

It is a tau number, because it is divible by the number of its divisors (360).

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 59 ways as a sum of consecutive naturals, for example, 602442297 + ... + 602477703.

Almost surely, 2^{21331301220000} is an apocalyptic number.

21331301220000 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 21331301220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37913317329888).

21331301220000 is an abundant number, since it is smaller than the sum of its proper divisors (54495333439776).

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

21331301220000 is a wasteful number, since it uses less digits than its factorization.

21331301220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38790 (or 38764 counting only the distinct ones).

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

Adding to 21331301220000 its reverse (2210313312), we get a palindrome (21333511533312).

The spelling of 21331301220000 in words is "twenty-one trillion, three hundred thirty-one billion, three hundred one million, two hundred twenty thousand".