2102311330321 has 4 divisors (see below), whose sum is σ = 2174804824500. Its totient is φ = 2029817836144.

The previous prime is 2102311330243. The next prime is 2102311330369. The reversal of 2102311330321 is 1230331132012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1647885690000 + 454425640321 = 1283700^2 + 674111^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102311330321 - 2¹⁵ = 2102311297553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102311330292 and 2102311330301.

It is not an unprimeable number, because it can be changed into a prime (2102311333321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36246747046 + ... + 36246747103.

It is an arithmetic number, because the mean of its divisors is an integer number (543701206125).

Almost surely, 2^{2102311330321} is an apocalyptic number.

It is an amenable number.

2102311330321 is a deficient number, since it is larger than the sum of its proper divisors (72493494179).

2102311330321 is an equidigital number, since it uses as much as digits as its factorization.

2102311330321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72493494178.

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

Adding to 2102311330321 its reverse (1230331132012), we get a palindrome (3332642462333).

The spelling of 2102311330321 in words is "two trillion, one hundred two billion, three hundred eleven million, three hundred thirty thousand, three hundred twenty-one".