221201204 has 12 divisors (see below), whose sum is σ = 442402464. Its totient is φ = 94800504.

The previous prime is 221201203. The next prime is 221201257. The reversal of 221201204 is 402102122.

221201204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

221201204 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201203) 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, 3949994 + ... + 3950049.

It is an arithmetic number, because the mean of its divisors is an integer number (36866872).

Almost surely, 2^221201204 is an apocalyptic number.

It is an amenable number.

221201204 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.

221201204 is a wasteful number, since it uses less digits than its factorization.

221201204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7900054 (or 7900052 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 221201204 is about 14872.8344305986. The cubic root of 221201204 is about 604.7777832897. Note that the first 4 decimals are identical.

Adding to 221201204 its reverse (402102122), we get a palindrome (623303326).

The spelling of 221201204 in words is "two hundred twenty-one million, two hundred one thousand, two hundred four".