221310230 has 16 divisors (see below), whose sum is σ = 400587120. Its totient is φ = 88028832.

The previous prime is 221310227. The next prime is 221310247. The reversal of 221310230 is 32013122.

It is a happy number.

221310230 is digitally balanced in base 2 and base 3, because in such bases 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, 60029 + ... + 63608.

It is an arithmetic number, because the mean of its divisors is an integer number (25036695).

Almost surely, 2^221310230 is an apocalyptic number.

221310230 is a deficient number, since it is larger than the sum of its proper divisors (179276890).

221310230 is a wasteful number, since it uses less digits than its factorization.

221310230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123823.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 221310230 is about 14876.4992521762. The cubic root of 221310230 is about 604.8771282471.

Adding to 221310230 its reverse (32013122), we get a palindrome (253323352).

The spelling of 221310230 in words is "two hundred twenty-one million, three hundred ten thousand, two hundred thirty".