2120345197 has 2 divisors, whose sum is σ = 2120345198. Its totient is φ = 2120345196.

The previous prime is 2120345191. The next prime is 2120345203. The reversal of 2120345197 is 7915430212.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2120345191) and next prime (2120345203).

It can be written as a sum of positive squares in only one way, i.e., 1280852521 + 839492676 = 35789^2 + 28974^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120345197 - 2²⁷ = 1986127469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120345191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060172598 + 1060172599.

It is an arithmetic number, because the mean of its divisors is an integer number (1060172599).

Almost surely, 2^2120345197 is an apocalyptic number.

It is an amenable number.

2120345197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120345197 is an equidigital number, since it uses as much as digits as its factorization.

2120345197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2120345197 is about 46047.2061801799. The cubic root of 2120345197 is about 1284.7013789275.

The spelling of 2120345197 in words is "two billion, one hundred twenty million, three hundred forty-five thousand, one hundred ninety-seven".