321421421023 has 8 divisors (see below), whose sum is σ = 321919809120. Its totient is φ = 320923188960.

The previous prime is 321421421011. The next prime is 321421421077. The reversal of 321421421023 is 320124124123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321421421023 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 (321421491023) 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 7 ways as a sum of consecutive naturals, for example, 4487133 + ... + 4558201.

It is an arithmetic number, because the mean of its divisors is an integer number (40239976140).

Almost surely, 2^321421421023 is an apocalyptic number.

321421421023 is a deficient number, since it is larger than the sum of its proper divisors (498388097).

321421421023 is an equidigital number, since it uses as much as digits as its factorization.

321421421023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78017.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 321421421023 its reverse (320124124123), we get a palindrome (641545545146).

The spelling of 321421421023 in words is "three hundred twenty-one billion, four hundred twenty-one million, four hundred twenty-one thousand, twenty-three".