221313230 has 16 divisors (see below), whose sum is σ = 399666960. Its totient is φ = 88235712.

The previous prime is 221313227. The next prime is 221313241. The reversal of 221313230 is 32313122.

It is a junction number, because it is equal to n+sod(n) for n = 221313199 and 221313208.

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, 32975 + ... + 39114.

It is an arithmetic number, because the mean of its divisors is an integer number (24979185).

Almost surely, 2^221313230 is an apocalyptic number.

221313230 is a deficient number, since it is larger than the sum of its proper divisors (178353730).

221313230 is a wasteful number, since it uses less digits than its factorization.

221313230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72403.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 221313230 is about 14876.6000820080. The cubic root of 221313230 is about 604.8798613987.

Adding to 221313230 its reverse (32313122), we get a palindrome (253626352).

The spelling of 221313230 in words is "two hundred twenty-one million, three hundred thirteen thousand, two hundred thirty".