12213107 has 4 divisors (see below), whose sum is σ = 12228216. Its totient is φ = 12198000.

The previous prime is 12213079. The next prime is 12213109. The reversal of 12213107 is 70131221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70131221 = 563 ⋅124567.

It is a cyclic number.

It is not a de Polignac number, because 12213107 - 2¹² = 12209011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12213109) 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, 6269 + ... + 7982.

It is an arithmetic number, because the mean of its divisors is an integer number (3057054).

Almost surely, 2^12213107 is an apocalyptic number.

12213107 is a deficient number, since it is larger than the sum of its proper divisors (15109).

12213107 is an equidigital number, since it uses as much as digits as its factorization.

12213107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15108.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 12213107 is about 3494.7255972394. The cubic root of 12213107 is about 230.2901630831.

Adding to 12213107 its reverse (70131221), we get a palindrome (82344328).

The spelling of 12213107 in words is "twelve million, two hundred thirteen thousand, one hundred seven".