21341243324 has 24 divisors (see below), whose sum is σ = 38774805888. Its totient is φ = 10266707520.

The previous prime is 21341243309. The next prime is 21341243333. The reversal of 21341243324 is 42334214312.

It is a super-2 number, since 2×21341243324² (a number of 21 digits) contains 22 as substring.

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, 475967 + ... + 518870.

It is an arithmetic number, because the mean of its divisors is an integer number (1615616912).

Almost surely, 2^21341243324 is an apocalyptic number.

It is an amenable number.

21341243324 is a deficient number, since it is larger than the sum of its proper divisors (17433562564).

21341243324 is a wasteful number, since it uses less digits than its factorization.

21341243324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995045 (or 995043 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

Adding to 21341243324 its reverse (42334214312), we get a palindrome (63675457636).

The spelling of 21341243324 in words is "twenty-one billion, three hundred forty-one million, two hundred forty-three thousand, three hundred twenty-four".