21324241312 has 192 divisors, whose sum is σ = 50478059520. Its totient is φ = 8754278400.

The previous prime is 21324241249. The next prime is 21324241319. The reversal of 21324241312 is 21314242312.

It is not an unprimeable number, because it can be changed into a prime (21324241319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25784643 + ... + 25785469.

It is an arithmetic number, because the mean of its divisors is an integer number (262906560).

Almost surely, 2^21324241312 is an apocalyptic number.

21324241312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21324241312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25239029760).

21324241312 is an abundant number, since it is smaller than the sum of its proper divisors (29153818208).

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

21324241312 is a wasteful number, since it uses less digits than its factorization.

21324241312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1027 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

Adding to 21324241312 its reverse (21314242312), we get a palindrome (42638483624).

The spelling of 21324241312 in words is "twenty-one billion, three hundred twenty-four million, two hundred forty-one thousand, three hundred twelve".