221130201 has 16 divisors (see below), whose sum is σ = 300041280. Its totient is φ = 144840960.

The previous prime is 221130199. The next prime is 221130229. The reversal of 221130201 is 102031122.

It is not a de Polignac number, because 221130201 - 2¹ = 221130199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221130001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40981 + ... + 46061.

It is an arithmetic number, because the mean of its divisors is an integer number (18752580).

Almost surely, 2^221130201 is an apocalyptic number.

It is an amenable number.

221130201 is a deficient number, since it is larger than the sum of its proper divisors (78911079).

221130201 is a wasteful number, since it uses less digits than its factorization.

221130201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5336.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 221130201 is about 14870.4472360451. The cubic root of 221130201 is about 604.7130674992.

Adding to 221130201 its reverse (102031122), we get a palindrome (323161323).

The spelling of 221130201 in words is "two hundred twenty-one million, one hundred thirty thousand, two hundred one".