2121310310333 has 4 divisors (see below), whose sum is σ = 2122027699260. Its totient is φ = 2120592921408.

The previous prime is 2121310310291. The next prime is 2121310310341. The reversal of 2121310310333 is 3330130131212.

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 532253416249 + 1589056894084 = 729557^2 + 1260578^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121310310333 - 2¹⁶ = 2121310244797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121310310299 and 2121310310308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121310310233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358690028 + ... + 358695941.

It is an arithmetic number, because the mean of its divisors is an integer number (530506924815).

Almost surely, 2^{2121310310333} is an apocalyptic number.

It is an amenable number.

2121310310333 is a deficient number, since it is larger than the sum of its proper divisors (717388927).

2121310310333 is an equidigital number, since it uses as much as digits as its factorization.

2121310310333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717388926.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 2121310310333 its reverse (3330130131212), we get a palindrome (5451440441545).

The spelling of 2121310310333 in words is "two trillion, one hundred twenty-one billion, three hundred ten million, three hundred ten thousand, three hundred thirty-three".