221030222 has 8 divisors (see below), whose sum is σ = 378908976. Its totient is φ = 94727232.

The previous prime is 221030179. The next prime is 221030231. The reversal of 221030222 is 222030122.

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

It is a Harshad number since it is a multiple of its sum of digits (14), and also a Moran number because the ratio is a prime number: 15787873 = 221030222 / (2 + 2 + 1 + 0 + 3 + 0 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 221030197 and 221030206.

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, 7893923 + ... + 7893950.

It is an arithmetic number, because the mean of its divisors is an integer number (47363622).

Almost surely, 2^221030222 is an apocalyptic number.

221030222 is a deficient number, since it is larger than the sum of its proper divisors (157878754).

221030222 is a wasteful number, since it uses less digits than its factorization.

221030222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15787882.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 221030222 is about 14867.0851884288. The cubic root of 221030222 is about 604.6219179993.

Adding to 221030222 its reverse (222030122), we get a palindrome (443060344).

The spelling of 221030222 in words is "two hundred twenty-one million, thirty thousand, two hundred twenty-two".