7221160712720 has 80 divisors (see below), whose sum is σ = 16993199530800. Its totient is φ = 2853494784000.

The previous prime is 7221160712719. The next prime is 7221160712737. The reversal of 7221160712720 is 272170611227.

It can be written as a sum of positive squares in 8 ways, for example, as 370189498624 + 6850971214096 = 608432^2 + 2617436^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2632700 + ... + 4623140.

It is an arithmetic number, because the mean of its divisors is an integer number (212414994135).

Almost surely, 2^{7221160712720} 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 7221160712720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8496599765400).

7221160712720 is an abundant number, since it is smaller than the sum of its proper divisors (9772038818080).

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

7221160712720 is a wasteful number, since it uses less digits than its factorization.

7221160712720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991004 (or 1990998 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

The spelling of 7221160712720 in words is "seven trillion, two hundred twenty-one billion, one hundred sixty million, seven hundred twelve thousand, seven hundred twenty".