221213113113 has 16 divisors (see below), whose sum is σ = 310500169280. Its totient is φ = 139702014144.

The previous prime is 221213113087. The next prime is 221213113117. The reversal of 221213113113 is 311311312122.

It is not a de Polignac number, because 221213113113 - 2¹⁰ = 221213112089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221213113113.

It is not an unprimeable number, because it can be changed into a prime (221213113117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565095 + ... + 872787.

It is an arithmetic number, because the mean of its divisors is an integer number (19406260580).

Almost surely, 2^221213113113 is an apocalyptic number.

It is an amenable number.

221213113113 is a deficient number, since it is larger than the sum of its proper divisors (89287056167).

221213113113 is a wasteful number, since it uses less digits than its factorization.

221213113113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320328.

The product of its digits is 216, while the sum is 21.

Adding to 221213113113 its reverse (311311312122), we get a palindrome (532524425235).

The spelling of 221213113113 in words is "two hundred twenty-one billion, two hundred thirteen million, one hundred thirteen thousand, one hundred thirteen".