21324232324 has 24 divisors (see below), whose sum is σ = 39037987800. Its totient is φ = 10178784000.

The previous prime is 21324232309. The next prime is 21324232333. The reversal of 21324232324 is 42323242312.

It can be written as a sum of positive squares in 4 ways, for example, as 192376900 + 21131855424 = 13870^2 + 145368^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21324232292 and 21324232301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022427 + ... + 1043074.

It is an arithmetic number, because the mean of its divisors is an integer number (1626582825).

Almost surely, 2^21324232324 is an apocalyptic number.

It is an amenable number.

21324232324 is a deficient number, since it is larger than the sum of its proper divisors (17713755476).

21324232324 is a wasteful number, since it uses less digits than its factorization.

21324232324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065623 (or 2065621 counting only the distinct ones).

The product of its digits is 13824, while the sum is 28.

Adding to 21324232324 its reverse (42323242312), we get a palindrome (63647474636).

The spelling of 21324232324 in words is "twenty-one billion, three hundred twenty-four million, two hundred thirty-two thousand, three hundred twenty-four".