21321133113332 has 48 divisors (see below), whose sum is σ = 40260075951312. Its totient is φ = 9821438853120.

The previous prime is 21321133113317. The next prime is 21321133113367. The reversal of 21321133113332 is 23331133112312.

It can be written as a sum of positive squares in 8 ways, for example, as 9666652047376 + 11654481065956 = 3109124^2 + 3413866^2 .

It is a super-2 number, since 2×21321133113332² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21321133113295 and 21321133113304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385296338 + ... + 385351670.

It is an arithmetic number, because the mean of its divisors is an integer number (838751582319).

Almost surely, 2^{21321133113332} is an apocalyptic number.

It is an amenable number.

21321133113332 is a deficient number, since it is larger than the sum of its proper divisors (18938942837980).

21321133113332 is a wasteful number, since it uses less digits than its factorization.

21321133113332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69588 (or 69586 counting only the distinct ones).

The product of its digits is 5832, while the sum is 29.

Adding to 21321133113332 its reverse (23331133112312), we get a palindrome (44652266225644).

The spelling of 21321133113332 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred thirty-three million, one hundred thirteen thousand, three hundred thirty-two".