221430230 has 32 divisors (see below), whose sum is σ = 459708480. Its totient is φ = 75219840.

The previous prime is 221430227. The next prime is 221430233. The reversal of 221430230 is 32034122.

221430230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221430227) and next prime (221430233).

It is a junction number, because it is equal to n+sod(n) for n = 221430199 and 221430208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221430233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6881 + ... + 22140.

It is an arithmetic number, because the mean of its divisors is an integer number (14365890).

Almost surely, 2^221430230 is an apocalyptic number.

221430230 is an abundant number, since it is smaller than the sum of its proper divisors (238278250).

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

221430230 is a wasteful number, since it uses less digits than its factorization.

221430230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29144.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 221430230 is about 14880.5319125359. The cubic root of 221430230 is about 604.9864350486.

Adding to 221430230 its reverse (32034122), we get a palindrome (253464352).

The spelling of 221430230 in words is "two hundred twenty-one million, four hundred thirty thousand, two hundred thirty".