221330030 has 32 divisors (see below), whose sum is σ = 421740000. Its totient is φ = 83486592.

The previous prime is 221329991. The next prime is 221330047. The reversal of 221330030 is 30033122.

It is a junction number, because it is equal to n+sod(n) for n = 221329987 and 221330014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3596 + ... + 21344.

It is an arithmetic number, because the mean of its divisors is an integer number (13179375).

Almost surely, 2^221330030 is an apocalyptic number.

221330030 is a deficient number, since it is larger than the sum of its proper divisors (200409970).

221330030 is a wasteful number, since it uses less digits than its factorization.

221330030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17828.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 221330030 is about 14877.1647164371. The cubic root of 221330030 is about 604.8951665908.

Adding to 221330030 its reverse (30033122), we get a palindrome (251363152).

The spelling of 221330030 in words is "two hundred twenty-one million, three hundred thirty thousand, thirty".