21214024305224 has 8 divisors (see below), whose sum is σ = 39776295572310. Its totient is φ = 10607012152608.

The previous prime is 21214024305211. The next prime is 21214024305241. The reversal of 21214024305224 is 42250342041212.

It can be written as a sum of positive squares in only one way, i.e., 18625111125124 + 2588913180100 = 4315682^2 + 1609010^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1325876519069 + ... + 1325876519084.

Almost surely, 2^{21214024305224} is an apocalyptic number.

It is an amenable number.

21214024305224 is a deficient number, since it is larger than the sum of its proper divisors (18562271267086).

21214024305224 is a wasteful number, since it uses less digits than its factorization.

21214024305224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651753038159 (or 2651753038155 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 21214024305224 its reverse (42250342041212), we get a palindrome (63464366346436).

The spelling of 21214024305224 in words is "twenty-one trillion, two hundred fourteen billion, twenty-four million, three hundred five thousand, two hundred twenty-four".