21424060224 has 112 divisors (see below), whose sum is σ = 71980348800. Its totient is φ = 6121156608.

The previous prime is 21424060201. The next prime is 21424060249. The reversal of 21424060224 is 42206042412.

21424060224 is a `hidden beast` number, since 2 + 14 + 2 + 40 + 602 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 873489 + ... + 897680.

Almost surely, 2^21424060224 is an apocalyptic number.

21424060224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21424060224 is an abundant number, since it is smaller than the sum of its proper divisors (50556288576).

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

21424060224 is a wasteful number, since it uses less digits than its factorization.

21424060224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771197 (or 1771181 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The spelling of 21424060224 in words is "twenty-one billion, four hundred twenty-four million, sixty thousand, two hundred twenty-four".