120209197 has 2 divisors, whose sum is σ = 120209198. Its totient is φ = 120209196.

The previous prime is 120209191. The next prime is 120209207. The reversal of 120209197 is 791902021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82828201 + 37380996 = 9101^2 + 6114^2 .

It is a cyclic number.

It is not a de Polignac number, because 120209197 - 2¹⁹ = 119684909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120209191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60104598 + 60104599.

It is an arithmetic number, because the mean of its divisors is an integer number (60104599).

Almost surely, 2^120209197 is an apocalyptic number.

It is an amenable number.

120209197 is a deficient number, since it is larger than the sum of its proper divisors (1).

120209197 is an equidigital number, since it uses as much as digits as its factorization.

120209197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 120209197 is about 10963.9954852234. The cubic root of 120209197 is about 493.5288730063.

The spelling of 120209197 in words is "one hundred twenty million, two hundred nine thousand, one hundred ninety-seven".