21314121324 has 24 divisors (see below), whose sum is σ = 49794295488. Its totient is φ = 7095943440.

The previous prime is 21314121319. The next prime is 21314121347. The reversal of 21314121324 is 42312141312.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21314121294 and 21314121303.

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, 1085322 + ... + 1104785.

It is an arithmetic number, because the mean of its divisors is an integer number (2074762312).

Almost surely, 2^21314121324 is an apocalyptic number.

It is an amenable number.

21314121324 is an abundant number, since it is smaller than the sum of its proper divisors (28480174164).

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

21314121324 is a wasteful number, since it uses less digits than its factorization.

21314121324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190925 (or 2190923 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

Adding to 21314121324 its reverse (42312141312), we get a palindrome (63626262636).

The spelling of 21314121324 in words is "twenty-one billion, three hundred fourteen million, one hundred twenty-one thousand, three hundred twenty-four".