12216790489 has 2 divisors, whose sum is σ = 12216790490. Its totient is φ = 12216790488.

The previous prime is 12216790471. The next prime is 12216790559. The reversal of 12216790489 is 98409761221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11359296400 + 857494089 = 106580^2 + 29283^2 .

It is a cyclic number.

It is not a de Polignac number, because 12216790489 - 2¹³ = 12216782297 is a prime.

It is not a weakly prime, because it can be changed into another prime (12216790429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6108395244 + 6108395245.

It is an arithmetic number, because the mean of its divisors is an integer number (6108395245).

Almost surely, 2^12216790489 is an apocalyptic number.

It is an amenable number.

12216790489 is a deficient number, since it is larger than the sum of its proper divisors (1).

12216790489 is an equidigital number, since it uses as much as digits as its factorization.

12216790489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 12216790489 in words is "twelve billion, two hundred sixteen million, seven hundred ninety thousand, four hundred eighty-nine".