221130113 has 4 divisors (see below), whose sum is σ = 232768560. Its totient is φ = 209491668.

The previous prime is 221130109. The next prime is 221130127. The reversal of 221130113 is 311031122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221130113 - 2² = 221130109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221130103) by changing a digit.

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, 5819195 + ... + 5819232.

It is an arithmetic number, because the mean of its divisors is an integer number (58192140).

Almost surely, 2^221130113 is an apocalyptic number.

It is an amenable number.

221130113 is a deficient number, since it is larger than the sum of its proper divisors (11638447).

221130113 is a wasteful number, since it uses less digits than its factorization.

221130113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11638446.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 221130113 is about 14870.4442771559. Note that the first 3 decimals coincide. The cubic root of 221130113 is about 604.7129872829.

Adding to 221130113 its reverse (311031122), we get a palindrome (532161235).

The spelling of 221130113 in words is "two hundred twenty-one million, one hundred thirty thousand, one hundred thirteen".