20121330020321 has 4 divisors (see below), whose sum is σ = 20125276158000. Its totient is φ = 20117383882644.

The previous prime is 20121330020303. The next prime is 20121330020377. The reversal of 20121330020321 is 12302003312102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20121330020321 is a prime.

It is a super-3 number, since 3×20121330020321³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20121330020293 and 20121330020302.

It is not an unprimeable number, because it can be changed into a prime (20121330020621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1973061191 + ... + 1973071388.

It is an arithmetic number, because the mean of its divisors is an integer number (5031319039500).

Almost surely, 2^{20121330020321} is an apocalyptic number.

It is an amenable number.

20121330020321 is a deficient number, since it is larger than the sum of its proper divisors (3946137679).

20121330020321 is an equidigital number, since it uses as much as digits as its factorization.

20121330020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3946137678.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20121330020321 its reverse (12302003312102), we get a palindrome (32423333332423).

The spelling of 20121330020321 in words is "twenty trillion, one hundred twenty-one billion, three hundred thirty million, twenty thousand, three hundred twenty-one".