2001320722 has 8 divisors (see below), whose sum is σ = 3008758896. Its totient is φ = 998401092.

The previous prime is 2001320719. The next prime is 2001320731. The reversal of 2001320722 is 2270231002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2001320722.

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 3 ways as a sum of consecutive naturals, for example, 1128528 + ... + 1130299.

It is an arithmetic number, because the mean of its divisors is an integer number (376094862).

Almost surely, 2^2001320722 is an apocalyptic number.

2001320722 is a deficient number, since it is larger than the sum of its proper divisors (1007438174).

2001320722 is a wasteful number, since it uses less digits than its factorization.

2001320722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259272.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2001320722 is about 44736.1232339147. The cubic root of 2001320722 is about 1260.1983231118.

Adding to 2001320722 its reverse (2270231002), we get a palindrome (4271551724).

The spelling of 2001320722 in words is "two billion, one million, three hundred twenty thousand, seven hundred twenty-two".