21242422248 has 32 divisors (see below), whose sum is σ = 55415016000. Its totient is φ = 6772946048.

The previous prime is 21242422247. The next prime is 21242422261. The reversal of 21242422248 is 84222424212.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (21242422247) 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 7 ways as a sum of consecutive naturals, for example, 19240773 + ... + 19241876.

It is an arithmetic number, because the mean of its divisors is an integer number (1731719250).

Almost surely, 2^21242422248 is an apocalyptic number.

It is an amenable number.

21242422248 is an abundant number, since it is smaller than the sum of its proper divisors (34172593752).

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

21242422248 is a wasteful number, since it uses less digits than its factorization.

21242422248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38482681 (or 38482677 counting only the distinct ones).

The product of its digits is 32768, while the sum is 33.

The spelling of 21242422248 in words is "twenty-one billion, two hundred forty-two million, four hundred twenty-two thousand, two hundred forty-eight".