21323312113120 has 48 divisors (see below), whose sum is σ = 50376604220208. Its totient is φ = 8529277547520.

The previous prime is 21323312113099. The next prime is 21323312113123. The reversal of 21323312113120 is 2131121332312.

It is a super-2 number, since 2×21323312113120² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323312113123) 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, 49759612 + ... + 50186308.

It is an arithmetic number, because the mean of its divisors is an integer number (1049512587921).

Almost surely, 2^{21323312113120} is an apocalyptic number.

21323312113120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21323312113120 is an abundant number, since it is smaller than the sum of its proper divisors (29053292107088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21323312113120 is a wasteful number, since it uses less digits than its factorization.

21323312113120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739043 (or 739035 counting only the distinct ones).

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

Adding to 21323312113120 its reverse (2131121332312), we get a palindrome (23454433445432).

The spelling of 21323312113120 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred twelve million, one hundred thirteen thousand, one hundred twenty".