221030032 has 20 divisors (see below), whose sum is σ = 428500476. Its totient is φ = 110449280.

The previous prime is 221030009. The next prime is 221030053. The reversal of 221030032 is 230030122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68161536 + 152868496 = 8256^2 + 12364^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221029994 and 221030021.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34782 + ... + 40642.

Almost surely, 2^221030032 is an apocalyptic number.

It is an amenable number.

221030032 is a deficient number, since it is larger than the sum of its proper divisors (207470444).

221030032 is a wasteful number, since it uses less digits than its factorization.

221030032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8226 (or 8220 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 221030032 is about 14867.0787984728. The cubic root of 221030032 is about 604.6217447527.

Adding to 221030032 its reverse (230030122), we get a palindrome (451060154).

The spelling of 221030032 in words is "two hundred twenty-one million, thirty thousand, thirty-two".