221941248 has 80 divisors (see below), whose sum is σ = 596318976. Its totient is φ = 73349120.

The previous prime is 221941231. The next prime is 221941249. The reversal of 221941248 is 842149122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221941249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200665 + ... + 201767.

Almost surely, 2^221941248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221941248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298159488).

221941248 is an abundant number, since it is smaller than the sum of its proper divisors (374377728).

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

221941248 is a wasteful number, since it uses less digits than its factorization.

221941248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255 (or 1239 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 221941248 is about 14897.6927072618. The cubic root of 221941248 is about 605.4514745876.

The spelling of 221941248 in words is "two hundred twenty-one million, nine hundred forty-one thousand, two hundred forty-eight".