221234204 has 12 divisors (see below), whose sum is σ = 388406928. Its totient is φ = 110260800.

The previous prime is 221234203. The next prime is 221234213. The reversal of 221234204 is 402432122.

221234204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221234203) 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, 87677 + ... + 90164.

It is an arithmetic number, because the mean of its divisors is an integer number (32367244).

Almost surely, 2^221234204 is an apocalyptic number.

It is an amenable number.

221234204 is a deficient number, since it is larger than the sum of its proper divisors (167172724).

221234204 is a wasteful number, since it uses less digits than its factorization.

221234204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178156 (or 178154 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 221234204 is about 14873.9437944346. The cubic root of 221234204 is about 604.8078564751.

Adding to 221234204 its reverse (402432122), we get a palindrome (623666326).

The spelling of 221234204 in words is "two hundred twenty-one million, two hundred thirty-four thousand, two hundred four".