221244230113 has 4 divisors (see below), whose sum is σ = 221334647040. Its totient is φ = 221153813188.

The previous prime is 221244230089. The next prime is 221244230131. The reversal of 221244230113 is 311032442122.

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 a de Polignac number, because none of the positive numbers 2^k-221244230113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221244230183) 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, 45204793 + ... + 45209686.

It is an arithmetic number, because the mean of its divisors is an integer number (55333661760).

Almost surely, 2^221244230113 is an apocalyptic number.

It is an amenable number.

221244230113 is a deficient number, since it is larger than the sum of its proper divisors (90416927).

221244230113 is an equidigital number, since it uses as much as digits as its factorization.

221244230113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90416926.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 221244230113 its reverse (311032442122), we get a palindrome (532276672235).

The spelling of 221244230113 in words is "two hundred twenty-one billion, two hundred forty-four million, two hundred thirty thousand, one hundred thirteen".