1001321103043 has 2 divisors, whose sum is σ = 1001321103044. Its totient is φ = 1001321103042.

The previous prime is 1001321103037. The next prime is 1001321103113. The reversal of 1001321103043 is 3403011231001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001321103043 - 2⁹ = 1001321102531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001321103043.

It is not a weakly prime, because it can be changed into another prime (1001321103143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500660551521 + 500660551522.

It is an arithmetic number, because the mean of its divisors is an integer number (500660551522).

Almost surely, 2^{1001321103043} is an apocalyptic number.

1001321103043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001321103043 is an equidigital number, since it uses as much as digits as its factorization.

1001321103043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1001321103043 its reverse (3403011231001), we get a palindrome (4404332334044).

The spelling of 1001321103043 in words is "one trillion, one billion, three hundred twenty-one million, one hundred three thousand, forty-three".