221033106 has 24 divisors (see below), whose sum is σ = 547320384. Its totient is φ = 63152280.

The previous prime is 221033083. The next prime is 221033119. The reversal of 221033106 is 601330122.

221033106 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 876990 + ... + 877241.

It is an arithmetic number, because the mean of its divisors is an integer number (22805016).

Almost surely, 2^221033106 is an apocalyptic number.

221033106 is an abundant number, since it is smaller than the sum of its proper divisors (326287278).

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

221033106 is a wasteful number, since it uses less digits than its factorization.

221033106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754246 (or 1754243 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 221033106 is about 14867.1821808976. The cubic root of 221033106 is about 604.6245476880.

Adding to 221033106 its reverse (601330122), we get a palindrome (822363228).

The spelling of 221033106 in words is "two hundred twenty-one million, thirty-three thousand, one hundred six".