12020211169 has 2 divisors, whose sum is σ = 12020211170. Its totient is φ = 12020211168.

The previous prime is 12020211107. The next prime is 12020211197. The reversal of 12020211169 is 96111202021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10699833600 + 1320377569 = 103440^2 + 36337^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020211169 - 2¹³ = 12020202977 is a prime.

It is a super-2 number, since 2×12020211169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12020211569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010105584 + 6010105585.

It is an arithmetic number, because the mean of its divisors is an integer number (6010105585).

Almost surely, 2^12020211169 is an apocalyptic number.

It is an amenable number.

12020211169 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020211169 is an equidigital number, since it uses as much as digits as its factorization.

12020211169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 12020211169 in words is "twelve billion, twenty million, two hundred eleven thousand, one hundred sixty-nine".