221040336 has 40 divisors (see below), whose sum is σ = 622933344. Its totient is φ = 66981760.

The previous prime is 221040301. The next prime is 221040353. The reversal of 221040336 is 633040122.

It is a happy number.

221040336 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208791 + ... + 209846.

Almost surely, 2^221040336 is an apocalyptic number.

It is an amenable number.

221040336 is an abundant number, since it is smaller than the sum of its proper divisors (401893008).

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

221040336 is a wasteful number, since it uses less digits than its factorization.

221040336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418659 (or 418653 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 221040336 is about 14867.4253319127. The cubic root of 221040336 is about 604.6311400456.

Adding to 221040336 its reverse (633040122), we get a palindrome (854080458).

The spelling of 221040336 in words is "two hundred twenty-one million, forty thousand, three hundred thirty-six".