21324422104 has 64 divisors (see below), whose sum is σ = 41559840000. Its totient is φ = 10246901760.

The previous prime is 21324422081. The next prime is 21324422113. The reversal of 21324422104 is 40122442312.

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, 37476732 + ... + 37477300.

It is an arithmetic number, because the mean of its divisors is an integer number (649372500).

Almost surely, 2^21324422104 is an apocalyptic number.

It is an amenable number.

21324422104 is a deficient number, since it is larger than the sum of its proper divisors (20235417896).

21324422104 is a wasteful number, since it uses less digits than its factorization.

21324422104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1384 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21324422104 its reverse (40122442312), we get a palindrome (61446864416).

The spelling of 21324422104 in words is "twenty-one billion, three hundred twenty-four million, four hundred twenty-two thousand, one hundred four".