21332113201321 has 12 divisors (see below), whose sum is σ = 24403892082892. Its totient is φ = 18532876624128.

The previous prime is 21332113201313. The next prime is 21332113201327. The reversal of 21332113201321 is 12310231123312.

It can be written as a sum of positive squares in 6 ways, for example, as 1958910951321 + 19373202250000 = 1399611^2 + 4401500^2 .

It is not a de Polignac number, because 21332113201321 - 2³ = 21332113201313 is a prime.

It is a super-2 number, since 2×21332113201321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21332113201327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2838978570 + ... + 2838986083.

Almost surely, 2^{21332113201321} is an apocalyptic number.

It is an amenable number.

21332113201321 is a deficient number, since it is larger than the sum of its proper divisors (3071778881571).

21332113201321 is a wasteful number, since it uses less digits than its factorization.

21332113201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5677964700 (or 5677964683 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21332113201321 its reverse (12310231123312), we get a palindrome (33642344324633).

The spelling of 21332113201321 in words is "twenty-one trillion, three hundred thirty-two billion, one hundred thirteen million, two hundred one thousand, three hundred twenty-one".