2100535312321 has 8 divisors (see below), whose sum is σ = 2181422698920. Its totient is φ = 2020211601408.

The previous prime is 2100535312303. The next prime is 2100535312363. The reversal of 2100535312321 is 1232135350012.

It can be written as a sum of positive squares in 4 ways, for example, as 1317699663921 + 782835648400 = 1147911^2 + 884780^2 .

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 2100535312321 - 2¹¹ = 2100535310273 is a prime.

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 2100535312321.

It is not an unprimeable number, because it can be changed into a prime (2100535312021) 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, 140911326 + ... + 140926231.

It is an arithmetic number, because the mean of its divisors is an integer number (272677837365).

Almost surely, 2^{2100535312321} is an apocalyptic number.

It is an amenable number.

2100535312321 is a deficient number, since it is larger than the sum of its proper divisors (80887386599).

2100535312321 is a wasteful number, since it uses less digits than its factorization.

2100535312321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281837843.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 2100535312321 in words is "two trillion, one hundred billion, five hundred thirty-five million, three hundred twelve thousand, three hundred twenty-one".