20210000120197 has 2 divisors, whose sum is σ = 20210000120198. Its totient is φ = 20210000120196.

The previous prime is 20210000120173. The next prime is 20210000120309. The reversal of 20210000120197 is 79102100001202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12403737347236 + 7806262772961 = 3521894^2 + 2793969^2 .

It is a cyclic number.

It is not a de Polignac number, because 20210000120197 - 2⁷ = 20210000120069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20210000129197) 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, 10105000060098 + 10105000060099.

It is an arithmetic number, because the mean of its divisors is an integer number (10105000060099).

Almost surely, 2^{20210000120197} is an apocalyptic number.

It is an amenable number.

20210000120197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210000120197 is an equidigital number, since it uses as much as digits as its factorization.

20210000120197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 20210000120197 its reverse (79102100001202), we get a palindrome (99312100121399).

The spelling of 20210000120197 in words is "twenty trillion, two hundred ten billion, one hundred twenty thousand, one hundred ninety-seven".