221113210 has 8 divisors (see below), whose sum is σ = 398003796. Its totient is φ = 88445280.

The previous prime is 221113201. The next prime is 221113213. The reversal of 221113210 is 12311122.

It can be written as a sum of positive squares in 2 ways, for example, as 209641441 + 11471769 = 14479^2 + 3387^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (221113213) 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, 11055651 + ... + 11055670.

Almost surely, 2^221113210 is an apocalyptic number.

221113210 is a deficient number, since it is larger than the sum of its proper divisors (176890586).

221113210 is a wasteful number, since it uses less digits than its factorization.

221113210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22111328.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 221113210 is about 14869.8759241629. The cubic root of 221113210 is about 604.6975789728.

Adding to 221113210 its reverse (12311122), we get a palindrome (233424332).

The spelling of 221113210 in words is "two hundred twenty-one million, one hundred thirteen thousand, two hundred ten".