221230113 has 16 divisors (see below), whose sum is σ = 319695936. Its totient is φ = 135270720.

The previous prime is 221230073. The next prime is 221230127. The reversal of 221230113 is 311032122.

221230113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221230113 - 2⁹ = 221229601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221230092 and 221230101.

It is not an unprimeable number, because it can be changed into a prime (221230193) 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, 11943 + ... + 24188.

It is an arithmetic number, because the mean of its divisors is an integer number (19980996).

Almost surely, 2^221230113 is an apocalyptic number.

It is an amenable number.

221230113 is a deficient number, since it is larger than the sum of its proper divisors (98465823).

221230113 is a wasteful number, since it uses less digits than its factorization.

221230113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36304.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 221230113 is about 14873.8062714290. The cubic root of 221230113 is about 604.8041284738.

Adding to 221230113 its reverse (311032122), we get a palindrome (532262235).

The spelling of 221230113 in words is "two hundred twenty-one million, two hundred thirty thousand, one hundred thirteen".