221113110 has 64 divisors (see below), whose sum is σ = 563889600. Its totient is φ = 55383552.

The previous prime is 221113091. The next prime is 221113121. The reversal of 221113110 is 11311122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28756 + ... + 35624.

It is an arithmetic number, because the mean of its divisors is an integer number (8810775).

Almost surely, 2^221113110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221113110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281944800).

221113110 is an abundant number, since it is smaller than the sum of its proper divisors (342776490).

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

221113110 is a wasteful number, since it uses less digits than its factorization.

221113110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6945.

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

The square root of 221113110 is about 14869.8725616597. The cubic root of 221113110 is about 604.6974878132.

Adding to 221113110 its reverse (11311122), we get a palindrome (232424232).

The spelling of 221113110 in words is "two hundred twenty-one million, one hundred thirteen thousand, one hundred ten".