221222030 has 8 divisors (see below), whose sum is σ = 398199672. Its totient is φ = 88488808.

The previous prime is 221222011. The next prime is 221222039. The reversal of 221222030 is 30222122.

221222030 is digitally balanced in base 3, 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 junction number, because it is equal to n+sod(n) for n = 221221996 and 221222014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222039) 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, 11061092 + ... + 11061111.

It is an arithmetic number, because the mean of its divisors is an integer number (49774959).

Almost surely, 2^221222030 is an apocalyptic number.

221222030 is a deficient number, since it is larger than the sum of its proper divisors (176977642).

221222030 is a wasteful number, since it uses less digits than its factorization.

221222030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22122210.

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

The square root of 221222030 is about 14873.5345496624. The cubic root of 221222030 is about 604.7967625517.

Adding to 221222030 its reverse (30222122), we get a palindrome (251444152).

It can be divided in two parts, 2212 and 22030, that added together give a palindrome (24242).

The spelling of 221222030 in words is "two hundred twenty-one million, two hundred twenty-two thousand, thirty".