2100300311321 has 4 divisors (see below), whose sum is σ = 2100305353572. Its totient is φ = 2100295269072.

The previous prime is 2100300311303. The next prime is 2100300311387. The reversal of 2100300311321 is 1231130030012.

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 1763488385296 + 336811926025 = 1327964^2 + 580355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100300311321 is a prime.

It is a super-2 number, since 2×2100300311321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100300311321.

It is not an unprimeable number, because it can be changed into a prime (2100300311821) 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, 1833866 + ... + 2750211.

It is an arithmetic number, because the mean of its divisors is an integer number (525076338393).

Almost surely, 2^{2100300311321} is an apocalyptic number.

It is an amenable number.

2100300311321 is a deficient number, since it is larger than the sum of its proper divisors (5042251).

2100300311321 is an equidigital number, since it uses as much as digits as its factorization.

2100300311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042250.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 2100300311321 its reverse (1231130030012), we get a palindrome (3331430341333).

The spelling of 2100300311321 in words is "two trillion, one hundred billion, three hundred million, three hundred eleven thousand, three hundred twenty-one".