2180120197 has 2 divisors, whose sum is σ = 2180120198. Its totient is φ = 2180120196.

The previous prime is 2180120161. The next prime is 2180120233. The reversal of 2180120197 is 7910210812.

It is a balanced prime because it is at equal distance from previous prime (2180120161) and next prime (2180120233).

It can be written as a sum of positive squares in only one way, i.e., 1754688321 + 425431876 = 41889^2 + 20626^2 .

It is a cyclic number.

It is not a de Polignac number, because 2180120197 - 2¹⁹ = 2179595909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2180120147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090060098 + 1090060099.

It is an arithmetic number, because the mean of its divisors is an integer number (1090060099).

Almost surely, 2^2180120197 is an apocalyptic number.

It is an amenable number.

2180120197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180120197 is an equidigital number, since it uses as much as digits as its factorization.

2180120197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 2180120197 is about 46691.7572704219. The cubic root of 2180120197 is about 1296.6620871216.

The spelling of 2180120197 in words is "two billion, one hundred eighty million, one hundred twenty thousand, one hundred ninety-seven".