2001023232321 has 16 divisors (see below), whose sum is σ = 2671270257600. Its totient is φ = 1332396514560.

The previous prime is 2001023232253. The next prime is 2001023232349. The reversal of 2001023232321 is 1232323201002.

It is a happy number.

It is not a de Polignac number, because 2001023232321 - 2¹⁰ = 2001023231297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001023232421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12289981 + ... + 12451733.

It is an arithmetic number, because the mean of its divisors is an integer number (166954391100).

Almost surely, 2^{2001023232321} is an apocalyptic number.

It is an amenable number.

2001023232321 is a deficient number, since it is larger than the sum of its proper divisors (670247025279).

2001023232321 is a wasteful number, since it uses less digits than its factorization.

2001023232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166736.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 2001023232321 its reverse (1232323201002), we get a palindrome (3233346433323).

The spelling of 2001023232321 in words is "two trillion, one billion, twenty-three million, two hundred thirty-two thousand, three hundred twenty-one".