221330342 has 8 divisors (see below), whose sum is σ = 332059296. Its totient is φ = 110643912.

The previous prime is 221330339. The next prime is 221330353. The reversal of 221330342 is 243033122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12128 + ... + 24284.

It is an arithmetic number, because the mean of its divisors is an integer number (41507412).

Almost surely, 2^221330342 is an apocalyptic number.

221330342 is a deficient number, since it is larger than the sum of its proper divisors (110728954).

221330342 is a wasteful number, since it uses less digits than its factorization.

221330342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21262.

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

The square root of 221330342 is about 14877.1752023024. The cubic root of 221330342 is about 604.8954508228.

Adding to 221330342 its reverse (243033122), we get a palindrome (464363464).

The spelling of 221330342 in words is "two hundred twenty-one million, three hundred thirty thousand, three hundred forty-two".