221130204 has 48 divisors (see below), whose sum is σ = 539971488. Its totient is φ = 70357248.

The previous prime is 221130199. The next prime is 221130229. The reversal of 221130204 is 402031122.

221130204 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18834 + ... + 28230.

It is an arithmetic number, because the mean of its divisors is an integer number (11249406).

Almost surely, 2^221130204 is an apocalyptic number.

It is an amenable number.

221130204 is an abundant number, since it is smaller than the sum of its proper divisors (318841284).

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

221130204 is a wasteful number, since it uses less digits than its factorization.

221130204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9494 (or 9492 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221130204 is about 14870.4473369163. The cubic root of 221130204 is about 604.7130702339.

Adding to 221130204 its reverse (402031122), we get a palindrome (623161326).

The spelling of 221130204 in words is "two hundred twenty-one million, one hundred thirty thousand, two hundred four".