12010220161 has 2 divisors, whose sum is σ = 12010220162. Its totient is φ = 12010220160.

The previous prime is 12010220147. The next prime is 12010220177. The reversal of 12010220161 is 16102201021.

It is an a-pointer prime, because the next prime (12010220177) can be obtained adding 12010220161 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7576657936 + 4433562225 = 87044^2 + 66585^2 .

It is an emirp because it is prime and its reverse (16102201021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12010220161 - 2¹⁵ = 12010187393 is a prime.

It is not a weakly prime, because it can be changed into another prime (12010220111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005110080 + 6005110081.

It is an arithmetic number, because the mean of its divisors is an integer number (6005110081).

Almost surely, 2^12010220161 is an apocalyptic number.

It is an amenable number.

12010220161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12010220161 is an equidigital number, since it uses as much as digits as its factorization.

12010220161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12010220161 its reverse (16102201021), we get a palindrome (28112421182).

The spelling of 12010220161 in words is "twelve billion, ten million, two hundred twenty thousand, one hundred sixty-one".