22221113 has 4 divisors (see below), whose sum is σ = 22233588. Its totient is φ = 22208640.

The previous prime is 22221109. The next prime is 22221161. The reversal of 22221113 is 31112222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31112222 = 2 ⋅15556111.

It can be written as a sum of positive squares in 2 ways, for example, as 6285049 + 15936064 = 2507^2 + 3992^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221113 - 2² = 22221109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22220113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3008 + ... + 7313.

It is an arithmetic number, because the mean of its divisors is an integer number (5558397).

Almost surely, 2^22221113 is an apocalyptic number.

It is an amenable number.

22221113 is a deficient number, since it is larger than the sum of its proper divisors (12475).

22221113 is a wasteful number, since it uses less digits than its factorization.

22221113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12474.

The product of its digits is 48, while the sum is 14.

The square root of 22221113 is about 4713.9275556589. The cubic root of 22221113 is about 281.1395439181.

Adding to 22221113 its reverse (31112222), we get a palindrome (53333335).

The spelling of 22221113 in words is "twenty-two million, two hundred twenty-one thousand, one hundred thirteen".