221030522 has 8 divisors (see below), whose sum is σ = 331876116. Its totient is φ = 110405152.

The previous prime is 221030507. The next prime is 221030533. The reversal of 221030522 is 225030122.

221030522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 187169761 + 33860761 = 13681^2 + 5819^2 .

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 221030522.

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, 52523 + ... + 56574.

Almost surely, 2^221030522 is an apocalyptic number.

221030522 is a deficient number, since it is larger than the sum of its proper divisors (110845594).

221030522 is a wasteful number, since it uses less digits than its factorization.

221030522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110112.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 221030522 is about 14867.0952778275. The cubic root of 221030522 is about 604.6221915463.

Adding to 221030522 its reverse (225030122), we get a palindrome (446060644).

The spelling of 221030522 in words is "two hundred twenty-one million, thirty thousand, five hundred twenty-two".