2121310321303 has 8 divisors (see below), whose sum is σ = 2131559807472. Its totient is φ = 2111068769856.

The previous prime is 2121310321297. The next prime is 2121310321391. The reversal of 2121310321303 is 3031230131212.

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 2121310321303 - 2³⁷ = 1983871367831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121310327303) 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, 1447350 + ... + 2517427.

It is an arithmetic number, because the mean of its divisors is an integer number (266444975934).

Almost surely, 2^{2121310321303} is an apocalyptic number.

2121310321303 is a deficient number, since it is larger than the sum of its proper divisors (10249486169).

2121310321303 is a wasteful number, since it uses less digits than its factorization.

2121310321303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967361.

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

Adding to 2121310321303 its reverse (3031230131212), we get a palindrome (5152540452515).

The spelling of 2121310321303 in words is "two trillion, one hundred twenty-one billion, three hundred ten million, three hundred twenty-one thousand, three hundred three".