221203030 has 8 divisors (see below), whose sum is σ = 398165472. Its totient is φ = 88481208.

The previous prime is 221202953. The next prime is 221203033. The reversal of 221203030 is 30302122.

It is a happy number.

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 221203030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221203033) 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, 11060142 + ... + 11060161.

It is an arithmetic number, because the mean of its divisors is an integer number (49770684).

Almost surely, 2^221203030 is an apocalyptic number.

221203030 is a deficient number, since it is larger than the sum of its proper divisors (176962442).

221203030 is a wasteful number, since it uses less digits than its factorization.

221203030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22120310.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 221203030 is about 14872.8958175602. The cubic root of 221203030 is about 604.7794474174.

Adding to 221203030 its reverse (30302122), we get a palindrome (251505152).

The spelling of 221203030 in words is "two hundred twenty-one million, two hundred three thousand, thirty".