21113354365224 has 96 divisors (see below), whose sum is σ = 58019463522720. Its totient is φ = 6397836016000.

The previous prime is 21113354365141. The next prime is 21113354365291. The reversal of 21113354365224 is 42256345331112.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239306479 + ... + 239394689.

It is an arithmetic number, because the mean of its divisors is an integer number (604369411695).

Almost surely, 2^{21113354365224} is an apocalyptic number.

21113354365224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21113354365224 is an abundant number, since it is smaller than the sum of its proper divisors (36906109157496).

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

21113354365224 is a wasteful number, since it uses less digits than its factorization.

21113354365224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170663 (or 170648 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

Adding to 21113354365224 its reverse (42256345331112), we get a palindrome (63369699696336).

The spelling of 21113354365224 in words is "twenty-one trillion, one hundred thirteen billion, three hundred fifty-four million, three hundred sixty-five thousand, two hundred twenty-four".