21214043024424 has 16 divisors (see below), whose sum is σ = 53035107561120. Its totient is φ = 7071347674800.

The previous prime is 21214043024357. The next prime is 21214043024441. The reversal of 21214043024424 is 42442034041212.

It is a super-2 number, since 2×21214043024424² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441959229652 + ... + 441959229699.

It is an arithmetic number, because the mean of its divisors is an integer number (3314694222570).

Almost surely, 2^{21214043024424} is an apocalyptic number.

21214043024424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21214043024424 is an abundant number, since it is smaller than the sum of its proper divisors (31821064536696).

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

21214043024424 is a wasteful number, since it uses less digits than its factorization.

21214043024424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883918459360 (or 883918459356 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 21214043024424 its reverse (42442034041212), we get a palindrome (63656077065636).

The spelling of 21214043024424 in words is "twenty-one trillion, two hundred fourteen billion, forty-three million, twenty-four thousand, four hundred twenty-four".