12212307 has 24 divisors (see below), whose sum is σ = 19665360. Its totient is φ = 7257600.

The previous prime is 12212303. The next prime is 12212311. The reversal of 12212307 is 70321221.

12212307 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12212303) and next prime (12212311).

It is not a de Polignac number, because 12212307 - 2² = 12212303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12212307.

It is not an unprimeable number, because it can be changed into a prime (12212303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 807 + ... + 5007.

It is an arithmetic number, because the mean of its divisors is an integer number (819390).

Almost surely, 2^12212307 is an apocalyptic number.

12212307 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12212307 is a deficient number, since it is larger than the sum of its proper divisors (7453053).

12212307 is a wasteful number, since it uses less digits than its factorization.

12212307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243 (or 4240 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 12212307 is about 3494.6111371653. The cubic root of 12212307 is about 230.2851347106.

Adding to 12212307 its reverse (70321221), we get a palindrome (82533528).

The spelling of 12212307 in words is "twelve million, two hundred twelve thousand, three hundred seven".