9721203360000 has 720 divisors, whose sum is σ = 35367635983680. Its totient is φ = 2350100480000.

The previous prime is 9721203359977. The next prime is 9721203360007. The reversal of 9721203360000 is 633021279.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (9721203360007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2053917634 + ... + 2053922366.

It is an arithmetic number, because the mean of its divisors is an integer number (49121716644).

Almost surely, 2^{9721203360000} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9721203360000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17683817991840).

9721203360000 is an abundant number, since it is smaller than the sum of its proper divisors (25646432623680).

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

9721203360000 is a wasteful number, since it uses less digits than its factorization.

9721203360000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5172 (or 5143 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

Adding to 9721203360000 its reverse (633021279), we get a palindrome (9721836381279).

The spelling of 9721203360000 in words is "nine trillion, seven hundred twenty-one billion, two hundred three million, three hundred sixty thousand".