21112324 has 12 divisors (see below), whose sum is σ = 37573200. Its totient is φ = 10377128.

The previous prime is 21112291. The next prime is 21112339. The reversal of 21112324 is 42321112.

It is a junction number, because it is equal to n+sod(n) for n = 21112298 and 21112307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44494 + ... + 44965.

It is an arithmetic number, because the mean of its divisors is an integer number (3131100).

Almost surely, 2^21112324 is an apocalyptic number.

It is an amenable number.

21112324 is a deficient number, since it is larger than the sum of its proper divisors (16460876).

21112324 is a wasteful number, since it uses less digits than its factorization.

21112324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89522 (or 89520 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 21112324 is about 4594.8149037801. The cubic root of 21112324 is about 276.3834375109.

Adding to 21112324 its reverse (42321112), we get a palindrome (63433436).

The spelling of 21112324 in words is "twenty-one million, one hundred twelve thousand, three hundred twenty-four".