221330246 has 8 divisors (see below), whose sum is σ = 332064360. Its totient is φ = 110642128.

The previous prime is 221330243. The next prime is 221330251. The reversal of 221330246 is 642033122.

221330246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221330243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5645 + ... + 21783.

It is an arithmetic number, because the mean of its divisors is an integer number (41508045).

Almost surely, 2^221330246 is an apocalyptic number.

221330246 is a deficient number, since it is larger than the sum of its proper divisors (110734114).

221330246 is a wasteful number, since it uses less digits than its factorization.

221330246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22998.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 221330246 is about 14877.1719758831. The cubic root of 221330246 is about 604.8953633668.

Adding to 221330246 its reverse (642033122), we get a palindrome (863363368).

The spelling of 221330246 in words is "two hundred twenty-one million, three hundred thirty thousand, two hundred forty-six".