12212434387 has 2 divisors, whose sum is σ = 12212434388. Its totient is φ = 12212434386.

The previous prime is 12212434349. The next prime is 12212434463. The reversal of 12212434387 is 78343421221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12212434387 - 2²⁷ = 12078216659 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212434327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106217193 + 6106217194.

It is an arithmetic number, because the mean of its divisors is an integer number (6106217194).

Almost surely, 2^12212434387 is an apocalyptic number.

12212434387 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212434387 is an equidigital number, since it uses as much as digits as its factorization.

12212434387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 37.

The spelling of 12212434387 in words is "twelve billion, two hundred twelve million, four hundred thirty-four thousand, three hundred eighty-seven".