21323120332113 has 6 divisors (see below), whose sum is σ = 30800062701954. Its totient is φ = 14215413554736.

The previous prime is 21323120332109. The next prime is 21323120332121. The reversal of 21323120332113 is 31123302132312.

21323120332113 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 312 + 0 + 332 + 1 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17493615756369 + 3829504575744 = 4182537^2 + 1956912^2 .

It is not a de Polignac number, because 21323120332113 - 2² = 21323120332109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21323120332103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1184617796220 + ... + 1184617796237.

It is an arithmetic number, because the mean of its divisors is an integer number (5133343783659).

Almost surely, 2^{21323120332113} is an apocalyptic number.

It is an amenable number.

21323120332113 is a deficient number, since it is larger than the sum of its proper divisors (9476942369841).

21323120332113 is a wasteful number, since it uses less digits than its factorization.

21323120332113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369235592463 (or 2369235592460 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 21323120332113 its reverse (31123302132312), we get a palindrome (52446422464425).

The spelling of 21323120332113 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred twenty million, three hundred thirty-two thousand, one hundred thirteen".