221030332 has 6 divisors (see below), whose sum is σ = 386803088. Its totient is φ = 110515164.

The previous prime is 221030317. The next prime is 221030333. The reversal of 221030332 is 233030122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221030333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27628788 + ... + 27628795.

Almost surely, 2^221030332 is an apocalyptic number.

It is an amenable number.

221030332 is a deficient number, since it is larger than the sum of its proper divisors (165772756).

221030332 is a wasteful number, since it uses less digits than its factorization.

221030332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55257587 (or 55257585 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 221030332 is about 14867.0888878758. The cubic root of 221030332 is about 604.6220182999.

Adding to 221030332 its reverse (233030122), we get a palindrome (454060454).

The spelling of 221030332 in words is "two hundred twenty-one million, thirty thousand, three hundred thirty-two".