1000321203001 has 2 divisors, whose sum is σ = 1000321203002. Its totient is φ = 1000321203000.

The previous prime is 1000321202983. The next prime is 1000321203041. The reversal of 1000321203001 is 1003021230001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622440524601 + 377880678400 = 788949^2 + 614720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000321203001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000321203041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500160601500 + 500160601501.

It is an arithmetic number, because the mean of its divisors is an integer number (500160601501).

Almost surely, 2^{1000321203001} is an apocalyptic number.

It is an amenable number.

1000321203001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000321203001 is an equidigital number, since it uses as much as digits as its factorization.

1000321203001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 1000321203001 its reverse (1003021230001), we get a palindrome (2003342433002).

The spelling of 1000321203001 in words is "one trillion, three hundred twenty-one million, two hundred three thousand, one".