210020111297 has 2 divisors, whose sum is σ = 210020111298. Its totient is φ = 210020111296.

The previous prime is 210020111293. The next prime is 210020111333. The reversal of 210020111297 is 792111020012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208630611121 + 1389500176 = 456761^2 + 37276^2 .

It is a cyclic number.

It is not a de Polignac number, because 210020111297 - 2² = 210020111293 is a prime.

It is not a weakly prime, because it can be changed into another prime (210020111293) 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, 105010055648 + 105010055649.

It is an arithmetic number, because the mean of its divisors is an integer number (105010055649).

Almost surely, 2^210020111297 is an apocalyptic number.

It is an amenable number.

210020111297 is a deficient number, since it is larger than the sum of its proper divisors (1).

210020111297 is an equidigital number, since it uses as much as digits as its factorization.

210020111297 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 26.

The spelling of 210020111297 in words is "two hundred ten billion, twenty million, one hundred eleven thousand, two hundred ninety-seven".