12321122189 has 2 divisors, whose sum is σ = 12321122190. Its totient is φ = 12321122188.

The previous prime is 12321122179. The next prime is 12321122251. The reversal of 12321122189 is 98122112321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10172336164 + 2148786025 = 100858^2 + 46355^2 .

It is an emirp because it is prime and its reverse (98122112321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12321122189 - 2³² = 8026154893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12321122129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160561094 + 6160561095.

It is an arithmetic number, because the mean of its divisors is an integer number (6160561095).

Almost surely, 2^12321122189 is an apocalyptic number.

It is an amenable number.

12321122189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321122189 is an equidigital number, since it uses as much as digits as its factorization.

12321122189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 32.

The spelling of 12321122189 in words is "twelve billion, three hundred twenty-one million, one hundred twenty-two thousand, one hundred eighty-nine".