12222113 has 4 divisors (see below), whose sum is σ = 12236868. Its totient is φ = 12207360.

The previous prime is 12222109. The next prime is 12222121. The reversal of 12222113 is 31122221.

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: 31122221 = 13 ⋅2394017.

It can be written as a sum of positive squares in 2 ways, for example, as 3794704 + 8427409 = 1948^2 + 2903^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222113 - 2² = 12222109 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 (12222013) 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, 6056 + ... + 7817.

It is an arithmetic number, because the mean of its divisors is an integer number (3059217).

Almost surely, 2^12222113 is an apocalyptic number.

It is an amenable number.

12222113 is a deficient number, since it is larger than the sum of its proper divisors (14755).

12222113 is an equidigital number, since it uses as much as digits as its factorization.

12222113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14754.

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

The square root of 12222113 is about 3496.0138729702. The cubic root of 12222113 is about 230.3467548422.

Adding to 12222113 its reverse (31122221), we get a palindrome (43344334).

The spelling of 12222113 in words is "twelve million, two hundred twenty-two thousand, one hundred thirteen".