21552421414324 has 24 divisors (see below), whose sum is σ = 37798587394848. Its totient is φ = 10752830864160.

The previous prime is 21552421414261. The next prime is 21552421414327. The reversal of 21552421414324 is 42341412425512.

It is a super-2 number, since 2×21552421414324² (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 (21552421414327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14095282 + ... + 15549334.

It is an arithmetic number, because the mean of its divisors is an integer number (1574941141452).

Almost surely, 2^{21552421414324} is an apocalyptic number.

It is an amenable number.

21552421414324 is a deficient number, since it is larger than the sum of its proper divisors (16246165980524).

21552421414324 is a wasteful number, since it uses less digits than its factorization.

21552421414324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462095 (or 1462093 counting only the distinct ones).

The product of its digits is 307200, while the sum is 40.

Adding to 21552421414324 its reverse (42341412425512), we get a palindrome (63893833839836).

The spelling of 21552421414324 in words is "twenty-one trillion, five hundred fifty-two billion, four hundred twenty-one million, four hundred fourteen thousand, three hundred twenty-four".