1002021329 has 2 divisors, whose sum is σ = 1002021330. Its totient is φ = 1002021328.

The previous prime is 1002021323. The next prime is 1002021343. The reversal of 1002021329 is 9231202001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1001849104 + 172225 = 31652^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002021329 - 2⁸ = 1002021073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1002021329.

It is not a weakly prime, because it can be changed into another prime (1002021323) by changing a digit.

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 as a sum of consecutive naturals, namely, 501010664 + 501010665.

It is an arithmetic number, because the mean of its divisors is an integer number (501010665).

Almost surely, 2^1002021329 is an apocalyptic number.

It is an amenable number.

1002021329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002021329 is an equidigital number, since it uses as much as digits as its factorization.

1002021329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1002021329 is about 31654.7204852610. The cubic root of 1002021329 is about 1000.6733228679.

The spelling of 1002021329 in words is "one billion, two million, twenty-one thousand, three hundred twenty-nine".