12212293 has 2 divisors, whose sum is σ = 12212294. Its totient is φ = 12212292.

The previous prime is 12212279. The next prime is 12212297. The reversal of 12212293 is 39221221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9597604 + 2614689 = 3098^2 + 1617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212293 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212297) 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 as a sum of consecutive naturals, namely, 6106146 + 6106147.

It is an arithmetic number, because the mean of its divisors is an integer number (6106147).

Almost surely, 2^12212293 is an apocalyptic number.

It is an amenable number.

12212293 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212293 is an equidigital number, since it uses as much as digits as its factorization.

12212293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 22.

The square root of 12212293 is about 3494.6091340807. The cubic root of 12212293 is about 230.2850467121.

The spelling of 12212293 in words is "twelve million, two hundred twelve thousand, two hundred ninety-three".