221243034 has 8 divisors (see below), whose sum is σ = 442486080. Its totient is φ = 73747676.

The previous prime is 221243023. The next prime is 221243051. The reversal of 221243034 is 430342122.

221243034 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.

221243034 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 221243034.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18436914 + ... + 18436925.

It is an arithmetic number, because the mean of its divisors is an integer number (55310760).

Almost surely, 2^221243034 is an apocalyptic number.

221243034 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221243034 is a wasteful number, since it uses less digits than its factorization.

221243034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36873844.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 221243034 is about 14874.2406192720. The cubic root of 221243034 is about 604.8159028233.

Adding to 221243034 its reverse (430342122), we get a palindrome (651585156).

The spelling of 221243034 in words is "two hundred twenty-one million, two hundred forty-three thousand, thirty-four".