221120204 has 12 divisors (see below), whose sum is σ = 387235800. Its totient is φ = 110481408.

The previous prime is 221120197. The next prime is 221120219. The reversal of 221120204 is 402021122.

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 3 ways as a sum of consecutive naturals, for example, 13109 + ... + 24780.

It is an arithmetic number, because the mean of its divisors is an integer number (32269650).

Almost surely, 2^221120204 is an apocalyptic number.

It is an amenable number.

221120204 is a deficient number, since it is larger than the sum of its proper divisors (166115596).

221120204 is a wasteful number, since it uses less digits than its factorization.

221120204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39352 (or 39350 counting only the distinct ones).

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

The square root of 221120204 is about 14870.1110957518. Note that the first 3 decimals coincide. The cubic root of 221120204 is about 604.7039546061.

Adding to 221120204 its reverse (402021122), we get a palindrome (623141326).

The spelling of 221120204 in words is "two hundred twenty-one million, one hundred twenty thousand, two hundred four".