21324703124 has 24 divisors (see below), whose sum is σ = 39361140000. Its totient is φ = 10080914400.

The previous prime is 21324703109. The next prime is 21324703157. The reversal of 21324703124 is 42130742312.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 243227 + ... + 319074.

It is an arithmetic number, because the mean of its divisors is an integer number (1640047500).

Almost surely, 2^21324703124 is an apocalyptic number.

It is an amenable number.

21324703124 is a deficient number, since it is larger than the sum of its proper divisors (18036436876).

21324703124 is a wasteful number, since it uses less digits than its factorization.

21324703124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562823 (or 562821 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The spelling of 21324703124 in words is "twenty-one billion, three hundred twenty-four million, seven hundred three thousand, one hundred twenty-four".