21113133322321 has 8 divisors (see below), whose sum is σ = 21241573197120. Its totient is φ = 20984766995472.

The previous prime is 21113133322313. The next prime is 21113133322331. The reversal of 21113133322321 is 12322333131112.

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

It is a cyclic number.

It is not a de Polignac number, because 21113133322321 - 2³ = 21113133322313 is a prime.

It is a super-2 number, since 2×21113133322321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21113133322321.

It is not an unprimeable number, because it can be changed into a prime (21113133322331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17811055 + ... + 18959428.

It is an arithmetic number, because the mean of its divisors is an integer number (2655196649640).

Almost surely, 2^{21113133322321} is an apocalyptic number.

It is an amenable number.

21113133322321 is a deficient number, since it is larger than the sum of its proper divisors (128439874799).

21113133322321 is a wasteful number, since it uses less digits than its factorization.

21113133322321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36773975.

The product of its digits is 3888, while the sum is 28.

Adding to 21113133322321 its reverse (12322333131112), we get a palindrome (33435466453433).

The spelling of 21113133322321 in words is "twenty-one trillion, one hundred thirteen billion, one hundred thirty-three million, three hundred twenty-two thousand, three hundred twenty-one".