221232346 has 8 divisors (see below), whose sum is σ = 332135424. Its totient is φ = 110520540.

The previous prime is 221232343. The next prime is 221232353. The reversal of 221232346 is 643232122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221232346.

It is not an unprimeable number, because it can be changed into a prime (221232343) 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, 44890 + ... + 49573.

It is an arithmetic number, because the mean of its divisors is an integer number (41516928).

Almost surely, 2^221232346 is an apocalyptic number.

221232346 is a deficient number, since it is larger than the sum of its proper divisors (110903078).

221232346 is a wasteful number, since it uses less digits than its factorization.

221232346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95636.

The product of its digits is 3456, while the sum is 25.

The square root of 221232346 is about 14873.8813360871. The cubic root of 221232346 is about 604.8061633431.

Adding to 221232346 its reverse (643232122), we get a palindrome (864464468).

The spelling of 221232346 in words is "two hundred twenty-one million, two hundred thirty-two thousand, three hundred forty-six".