210120061313 has 2 divisors, whose sum is σ = 210120061314. Its totient is φ = 210120061312.

The previous prime is 210120061273. The next prime is 210120061331. The reversal of 210120061313 is 313160021012.

Together with next prime (210120061331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143696339329 + 66423721984 = 379073^2 + 257728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210120061313 is a prime.

It is not a weakly prime, because it can be changed into another prime (210120061363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060030656 + 105060030657.

It is an arithmetic number, because the mean of its divisors is an integer number (105060030657).

Almost surely, 2^210120061313 is an apocalyptic number.

It is an amenable number.

210120061313 is a deficient number, since it is larger than the sum of its proper divisors (1).

210120061313 is an equidigital number, since it uses as much as digits as its factorization.

210120061313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 210120061313 its reverse (313160021012), we get a palindrome (523280082325).

The spelling of 210120061313 in words is "two hundred ten billion, one hundred twenty million, sixty-one thousand, three hundred thirteen".