12120220169 has 2 divisors, whose sum is σ = 12120220170. Its totient is φ = 12120220168.

The previous prime is 12120220163. The next prime is 12120220187. The reversal of 12120220169 is 96102202121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12090102025 + 30118144 = 109955^2 + 5488^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120220169 - 2⁴ = 12120220153 is a prime.

It is a super-2 number, since 2×12120220169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12120220163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060110084 + 6060110085.

It is an arithmetic number, because the mean of its divisors is an integer number (6060110085).

Almost surely, 2^12120220169 is an apocalyptic number.

It is an amenable number.

12120220169 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120220169 is an equidigital number, since it uses as much as digits as its factorization.

12120220169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 12120220169 in words is "twelve billion, one hundred twenty million, two hundred twenty thousand, one hundred sixty-nine".