120721708800 has 1728 divisors, whose sum is σ = 567417016320. Its totient is φ = 24385536000.

The previous prime is 120721708799. The next prime is 120721708841. The reversal of 120721708800 is 8807127021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1728).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 572140695 + ... + 572140905.

Almost surely, 2^120721708800 is an apocalyptic number.

120721708800 is a gapful number since it is divisible by the number (10) 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 120721708800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283708508160).

120721708800 is an abundant number, since it is smaller than the sum of its proper divisors (446695307520).

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

120721708800 is a wasteful number, since it uses less digits than its factorization.

120721708800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The spelling of 120721708800 in words is "one hundred twenty billion, seven hundred twenty-one million, seven hundred eight thousand, eight hundred".