321310021300421 has 16 divisors (see below), whose sum is σ = 328547064668160. Its totient is φ = 314152426626480.

The previous prime is 321310021300409. The next prime is 321310021300439. The reversal of 321310021300421 is 124003120013123.

It is a cyclic number.

It is not a de Polignac number, because 321310021300421 - 2¹⁴ = 321310021284037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321310021300441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252352436 + ... + 253622498.

It is an arithmetic number, because the mean of its divisors is an integer number (20534191541760).

Almost surely, 2^{321310021300421} is an apocalyptic number.

It is an amenable number.

321310021300421 is a deficient number, since it is larger than the sum of its proper divisors (7237043367739).

321310021300421 is a wasteful number, since it uses less digits than its factorization.

321310021300421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301336.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 321310021300421 its reverse (124003120013123), we get a palindrome (445313141313544).

The spelling of 321310021300421 in words is "three hundred twenty-one trillion, three hundred ten billion, twenty-one million, three hundred thousand, four hundred twenty-one".