21223859048 has 32 divisors (see below), whose sum is σ = 45555696000. Its totient is φ = 9080740032.

The previous prime is 21223859011. The next prime is 21223859051. The reversal of 21223859048 is 84095832212.

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, 282815 + ... + 349902.

It is an arithmetic number, because the mean of its divisors is an integer number (1423615500).

Almost surely, 2^21223859048 is an apocalyptic number.

21223859048 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21223859048 is an abundant number, since it is smaller than the sum of its proper divisors (24331836952).

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

21223859048 is a wasteful number, since it uses less digits than its factorization.

21223859048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633329 (or 633325 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 21223859048 in words is "twenty-one billion, two hundred twenty-three million, eight hundred fifty-nine thousand, forty-eight".