2001120973 has 2 divisors, whose sum is σ = 2001120974. Its totient is φ = 2001120972.

The previous prime is 2001120941. The next prime is 2001121019. The reversal of 2001120973 is 3790211002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1942781929 + 58339044 = 44077^2 + 7638^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001120973 - 2⁵ = 2001120941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001120673) 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 as a sum of consecutive naturals, namely, 1000560486 + 1000560487.

It is an arithmetic number, because the mean of its divisors is an integer number (1000560487).

Almost surely, 2^2001120973 is an apocalyptic number.

It is an amenable number.

2001120973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001120973 is an equidigital number, since it uses as much as digits as its factorization.

2001120973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 2001120973 is about 44733.8906535079. The cubic root of 2001120973 is about 1260.1563955108.

Adding to 2001120973 its reverse (3790211002), we get a palindrome (5791331975).

The spelling of 2001120973 in words is "two billion, one million, one hundred twenty thousand, nine hundred seventy-three".