12120222689 has 2 divisors, whose sum is σ = 12120222690. Its totient is φ = 12120222688.

The previous prime is 12120222671. The next prime is 12120222767. The reversal of 12120222689 is 98622202121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7389121600 + 4731101089 = 85960^2 + 68783^2 .

It is an emirp because it is prime and its reverse (98622202121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12120222689 - 2²⁰ = 12119174113 is a prime.

It is not a weakly prime, because it can be changed into another prime (12120422689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060111344 + 6060111345.

It is an arithmetic number, because the mean of its divisors is an integer number (6060111345).

Almost surely, 2^12120222689 is an apocalyptic number.

It is an amenable number.

12120222689 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120222689 is an equidigital number, since it uses as much as digits as its factorization.

12120222689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The spelling of 12120222689 in words is "twelve billion, one hundred twenty million, two hundred twenty-two thousand, six hundred eighty-nine".