12212407 has 2 divisors, whose sum is σ = 12212408. Its totient is φ = 12212406.

The previous prime is 12212399. The next prime is 12212413. The reversal of 12212407 is 70421221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12212407 - 2³ = 12212399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106203 + 6106204.

It is an arithmetic number, because the mean of its divisors is an integer number (6106204).

Almost surely, 2^12212407 is an apocalyptic number.

12212407 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212407 is an equidigital number, since it uses as much as digits as its factorization.

12212407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 12212407 is about 3494.6254448796. The cubic root of 12212407 is about 230.2857632692.

Adding to 12212407 its reverse (70421221), we get a palindrome (82633628).

The spelling of 12212407 in words is "twelve million, two hundred twelve thousand, four hundred seven".