21122331324 has 24 divisors (see below), whose sum is σ = 49453657680. Its totient is φ = 7016745984.

The previous prime is 21122331299. The next prime is 21122331341. The reversal of 21122331324 is 42313322112.

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 = 21122331294 and 21122331303.

It is a congruent number.

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, 3000229 + ... + 3007260.

It is an arithmetic number, because the mean of its divisors is an integer number (2060569070).

Almost surely, 2^21122331324 is an apocalyptic number.

It is an amenable number.

21122331324 is an abundant number, since it is smaller than the sum of its proper divisors (28331326356).

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

21122331324 is a wasteful number, since it uses less digits than its factorization.

21122331324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6007789 (or 6007787 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

Adding to 21122331324 its reverse (42313322112), we get a palindrome (63435653436).

The spelling of 21122331324 in words is "twenty-one billion, one hundred twenty-two million, three hundred thirty-one thousand, three hundred twenty-four".