1001323122321 has 16 divisors (see below), whose sum is σ = 1393683148800. Its totient is φ = 638278336080.

The previous prime is 1001323122281. The next prime is 1001323122323. The reversal of 1001323122321 is 1232213231001.

It is not a de Polignac number, because 1001323122321 - 2²¹ = 1001321025169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001323122323) 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 in 15 ways as a sum of consecutive naturals, for example, 2621671 + ... + 2979228.

It is an arithmetic number, because the mean of its divisors is an integer number (87105196800).

Almost surely, 2^{1001323122321} is an apocalyptic number.

It is an amenable number.

1001323122321 is a deficient number, since it is larger than the sum of its proper divisors (392360026479).

1001323122321 is a wasteful number, since it uses less digits than its factorization.

1001323122321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5603516.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1001323122321 its reverse (1232213231001), we get a palindrome (2233536353322).

The spelling of 1001323122321 in words is "one trillion, one billion, three hundred twenty-three million, one hundred twenty-two thousand, three hundred twenty-one".