12210978443 has 2 divisors, whose sum is σ = 12210978444. Its totient is φ = 12210978442.

The previous prime is 12210978379. The next prime is 12210978469. The reversal of 12210978443 is 34487901221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12210978443 - 2⁶ = 12210978379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12210978443.

It is not a weakly prime, because it can be changed into another prime (12210908443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105489221 + 6105489222.

It is an arithmetic number, because the mean of its divisors is an integer number (6105489222).

Almost surely, 2^12210978443 is an apocalyptic number.

12210978443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210978443 is an equidigital number, since it uses as much as digits as its factorization.

12210978443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 12210978443 in words is "twelve billion, two hundred ten million, nine hundred seventy-eight thousand, four hundred forty-three".