1001321043321 has 8 divisors (see below), whose sum is σ = 1335107120544. Its totient is φ = 667541164160.

The previous prime is 1001321043319. The next prime is 1001321043353. The reversal of 1001321043321 is 1233401231001.

1001321043321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001321043321 - 2¹ = 1001321043319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001321043361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1158456 + ... + 1828841.

It is an arithmetic number, because the mean of its divisors is an integer number (166888390068).

Almost surely, 2^{1001321043321} is an apocalyptic number.

It is an amenable number.

1001321043321 is a deficient number, since it is larger than the sum of its proper divisors (333786077223).

1001321043321 is a wasteful number, since it uses less digits than its factorization.

1001321043321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099031.

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

Adding to 1001321043321 its reverse (1233401231001), we get a palindrome (2234722274322).

The spelling of 1001321043321 in words is "one trillion, one billion, three hundred twenty-one million, forty-three thousand, three hundred twenty-one".