221230032 has 20 divisors (see below), whose sum is σ = 571511040. Its totient is φ = 73743328.

The previous prime is 221230021. The next prime is 221230057. The reversal of 221230032 is 230032122.

It is a junction number, because it is equal to n+sod(n) for n = 221229993 and 221230020.

It is a congruent number.

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, 2304432 + ... + 2304527.

It is an arithmetic number, because the mean of its divisors is an integer number (28575552).

Almost surely, 2^221230032 is an apocalyptic number.

It is an amenable number.

221230032 is an abundant number, since it is smaller than the sum of its proper divisors (350281008).

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

221230032 is a wasteful number, since it uses less digits than its factorization.

221230032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4608970 (or 4608964 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 221230032 is about 14873.8035485211. The cubic root of 221230032 is about 604.8040546605.

Adding to 221230032 its reverse (230032122), we get a palindrome (451262154).

The spelling of 221230032 in words is "two hundred twenty-one million, two hundred thirty thousand, thirty-two".