21343122324 has 48 divisors (see below), whose sum is σ = 56271902400. Its totient is φ = 6993789408.

The previous prime is 21343122293. The next prime is 21343122337. The reversal of 21343122324 is 42322134312.

21343122324 is a `hidden beast` number, since 2 + 1 + 3 + 431 + 223 + 2 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1668387 + ... + 1681130.

It is an arithmetic number, because the mean of its divisors is an integer number (1172331300).

Almost surely, 2^21343122324 is an apocalyptic number.

It is an amenable number.

21343122324 is an abundant number, since it is smaller than the sum of its proper divisors (34928780076).

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

21343122324 is a wasteful number, since it uses less digits than its factorization.

21343122324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349589 (or 3349581 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 21343122324 its reverse (42322134312), we get a palindrome (63665256636).

The spelling of 21343122324 in words is "twenty-one billion, three hundred forty-three million, one hundred twenty-two thousand, three hundred twenty-four".