21223272530 has 32 divisors (see below), whose sum is σ = 39199783680. Its totient is φ = 8269269120.

The previous prime is 21223272529. The next prime is 21223272571. The reversal of 21223272530 is 3527232212.

It is a junction number, because it is equal to n+sod(n) for n = 21223272493 and 21223272502.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7835 + ... + 206174.

It is an arithmetic number, because the mean of its divisors is an integer number (1224993240).

Almost surely, 2^21223272530 is an apocalyptic number.

21223272530 is a deficient number, since it is larger than the sum of its proper divisors (17976511150).

21223272530 is a wasteful number, since it uses less digits than its factorization.

21223272530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214274.

The product of its (nonzero) digits is 10080, while the sum is 29.

The spelling of 21223272530 in words is "twenty-one billion, two hundred twenty-three million, two hundred seventy-two thousand, five hundred thirty".