221253230 has 16 divisors (see below), whose sum is σ = 434461104. Its totient is φ = 80455680.

The previous prime is 221253191. The next prime is 221253247. The reversal of 221253230 is 32352122.

221253230 is digitally balanced in base 3, 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005587 + ... + 1005806.

It is an arithmetic number, because the mean of its divisors is an integer number (27153819).

Almost surely, 2^221253230 is an apocalyptic number.

221253230 is a deficient number, since it is larger than the sum of its proper divisors (213207874).

221253230 is a wasteful number, since it uses less digits than its factorization.

221253230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011411.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 221253230 is about 14874.5833555095. The cubic root of 221253230 is about 604.8251936743.

The spelling of 221253230 in words is "two hundred twenty-one million, two hundred fifty-three thousand, two hundred thirty".