21223214024 has 16 divisors (see below), whose sum is σ = 39802907520. Its totient is φ = 10609105360.

The previous prime is 21223214011. The next prime is 21223214029. The reversal of 21223214024 is 42041232212.

It is not an unprimeable number, because it can be changed into a prime (21223214029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276404 + ... + 344739.

It is an arithmetic number, because the mean of its divisors is an integer number (2487681720).

Almost surely, 2^21223214024 is an apocalyptic number.

It is an amenable number.

21223214024 is a deficient number, since it is larger than the sum of its proper divisors (18579693496).

21223214024 is a wasteful number, since it uses less digits than its factorization.

21223214024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625420 (or 625416 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 21223214024 its reverse (42041232212), we get a palindrome (63264446236).

The spelling of 21223214024 in words is "twenty-one billion, two hundred twenty-three million, two hundred fourteen thousand, twenty-four".