20331321312001 has 4 divisors (see below), whose sum is σ = 23235795785152. Its totient is φ = 17426846838852.

The previous prime is 20331321311993. The next prime is 20331321312053. The reversal of 20331321312001 is 10021312313302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20331321312001 - 2³ = 20331321311993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331321312091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1452237236565 + ... + 1452237236578.

It is an arithmetic number, because the mean of its divisors is an integer number (5808948946288).

Almost surely, 2^{20331321312001} is an apocalyptic number.

It is an amenable number.

20331321312001 is a deficient number, since it is larger than the sum of its proper divisors (2904474473151).

20331321312001 is an equidigital number, since it uses as much as digits as its factorization.

20331321312001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904474473150.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20331321312001 its reverse (10021312313302), we get a palindrome (30352633625303).

The spelling of 20331321312001 in words is "twenty trillion, three hundred thirty-one billion, three hundred twenty-one million, three hundred twelve thousand, one".