2121310310323 has 24 divisors (see below), whose sum is σ = 2170564689600. Its totient is φ = 2072791488768.

The previous prime is 2121310310291. The next prime is 2121310310341. The reversal of 2121310310323 is 3230130131212.

It is not a de Polignac number, because 2121310310323 - 2⁵ = 2121310310291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121310310294 and 2121310310303.

It is not an unprimeable number, because it can be changed into a prime (2121310310023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2661618561 + ... + 2661619357.

It is an arithmetic number, because the mean of its divisors is an integer number (90440195400).

Almost surely, 2^{2121310310323} is an apocalyptic number.

2121310310323 is a deficient number, since it is larger than the sum of its proper divisors (49254379277).

2121310310323 is an frugal number, since it uses more digits than its factorization.

2121310310323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079 (or 1282 counting only the distinct ones).

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

Adding to 2121310310323 its reverse (3230130131212), we get a palindrome (5351440441535).

The spelling of 2121310310323 in words is "two trillion, one hundred twenty-one billion, three hundred ten million, three hundred ten thousand, three hundred twenty-three".