21141214341321 has 4 divisors (see below), whose sum is σ = 28188285788432. Its totient is φ = 14094142894212.

The previous prime is 21141214341229. The next prime is 21141214341329. The reversal of 21141214341321 is 12314341214112.

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 not a de Polignac number, because 21141214341321 - 2¹⁵ = 21141214308553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21141214341329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3523535723551 + ... + 3523535723556.

It is an arithmetic number, because the mean of its divisors is an integer number (7047071447108).

Almost surely, 2^{21141214341321} is an apocalyptic number.

It is an amenable number.

21141214341321 is a deficient number, since it is larger than the sum of its proper divisors (7047071447111).

21141214341321 is an equidigital number, since it uses as much as digits as its factorization.

21141214341321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7047071447110.

The product of its digits is 4608, while the sum is 30.

Adding to 21141214341321 its reverse (12314341214112), we get a palindrome (33455555555433).

The spelling of 21141214341321 in words is "twenty-one trillion, one hundred forty-one billion, two hundred fourteen million, three hundred forty-one thousand, three hundred twenty-one".