221048324 has 24 divisors (see below), whose sum is σ = 457343040. Its totient is φ = 91467936.

The previous prime is 221048293. The next prime is 221048327. The reversal of 221048324 is 423840122.

It is a junction number, because it is equal to n+sod(n) for n = 221048293 and 221048302.

It is not an unprimeable number, because it can be changed into a prime (221048327) 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 7 ways as a sum of consecutive naturals, for example, 135302 + ... + 136925.

It is an arithmetic number, because the mean of its divisors is an integer number (19055960).

Almost surely, 2^221048324 is an apocalyptic number.

It is an amenable number.

221048324 is an abundant number, since it is smaller than the sum of its proper divisors (236294716).

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

221048324 is a wasteful number, since it uses less digits than its factorization.

221048324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272267 (or 272265 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 221048324 is about 14867.6939704851. The cubic root of 221048324 is about 604.6384233850.

Adding to 221048324 its reverse (423840122), we get a palindrome (644888446).

The spelling of 221048324 in words is "two hundred twenty-one million, forty-eight thousand, three hundred twenty-four".