21224302323 has 48 divisors (see below), whose sum is σ = 33504481440. Its totient is φ = 11914366464.

The previous prime is 21224302321. The next prime is 21224302367. The reversal of 21224302323 is 32320342212.

It is not a de Polignac number, because 21224302323 - 2¹ = 21224302321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21224302293 and 21224302302.

It is not an unprimeable number, because it can be changed into a prime (21224302321) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2048865 + ... + 2059197.

It is an arithmetic number, because the mean of its divisors is an integer number (698010030).

Almost surely, 2^21224302323 is an apocalyptic number.

21224302323 is a deficient number, since it is larger than the sum of its proper divisors (12280179117).

21224302323 is a wasteful number, since it uses less digits than its factorization.

21224302323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10596 (or 10589 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 21224302323 its reverse (32320342212), we get a palindrome (53544644535).

The spelling of 21224302323 in words is "twenty-one billion, two hundred twenty-four million, three hundred two thousand, three hundred twenty-three".