21330002031321 has 8 divisors (see below), whose sum is σ = 29936844956320. Its totient is φ = 13471580230272.

The previous prime is 21330002031307. The next prime is 21330002031329. The reversal of 21330002031321 is 12313020003312.

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

It is not a de Polignac number, because 21330002031321 - 2⁶ = 21330002031257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21330002031329) 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, 187105280920 + ... + 187105281033.

It is an arithmetic number, because the mean of its divisors is an integer number (3742105619540).

Almost surely, 2^{21330002031321} is an apocalyptic number.

It is an amenable number.

21330002031321 is a deficient number, since it is larger than the sum of its proper divisors (8606842924999).

21330002031321 is a wasteful number, since it uses less digits than its factorization.

21330002031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374210561975.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21330002031321 its reverse (12313020003312), we get a palindrome (33643022034633).

The spelling of 21330002031321 in words is "twenty-one trillion, three hundred thirty billion, two million, thirty-one thousand, three hundred twenty-one".