221343230 has 16 divisors (see below), whose sum is σ = 421854480. Its totient is φ = 83329152.

The previous prime is 221343173. The next prime is 221343251. The reversal of 221343230 is 32343122.

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, 650840 + ... + 651179.

It is an arithmetic number, because the mean of its divisors is an integer number (26365905).

Almost surely, 2^221343230 is an apocalyptic number.

221343230 is a deficient number, since it is larger than the sum of its proper divisors (200511250).

221343230 is a wasteful number, since it uses less digits than its factorization.

221343230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302043.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 221343230 is about 14877.6083427411. The cubic root of 221343230 is about 604.9071915556.

Adding to 221343230 its reverse (32343122), we get a palindrome (253686352).

The spelling of 221343230 in words is "two hundred twenty-one million, three hundred forty-three thousand, two hundred thirty".