221040352 has 24 divisors (see below), whose sum is σ = 468648936. Its totient is φ = 102018432.

The previous prime is 221040301. The next prime is 221040353. The reversal of 221040352 is 253040122.

221040352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221040353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265258 + ... + 266089.

It is an arithmetic number, because the mean of its divisors is an integer number (19527039).

Almost surely, 2^221040352 is an apocalyptic number.

It is an amenable number.

221040352 is an abundant number, since it is smaller than the sum of its proper divisors (247608584).

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

221040352 is a wasteful number, since it uses less digits than its factorization.

221040352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531370 (or 531362 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 221040352 is about 14867.4258700018. The cubic root of 221040352 is about 604.6311546343.

Adding to 221040352 its reverse (253040122), we get a palindrome (474080474).

The spelling of 221040352 in words is "two hundred twenty-one million, forty thousand, three hundred fifty-two".