210010112122121 has 2 divisors, whose sum is σ = 210010112122122. Its totient is φ = 210010112122120.

The previous prime is 210010112122103. The next prime is 210010112122133. The reversal of 210010112122121 is 121221211010012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197702722062400 + 12307390059721 = 14060680^2 + 3508189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210010112122121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210010112122121.

It is not a weakly prime, because it can be changed into another prime (210010112124121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105005056061060 + 105005056061061.

It is an arithmetic number, because the mean of its divisors is an integer number (105005056061061).

Almost surely, 2^{210010112122121} is an apocalyptic number.

It is an amenable number.

210010112122121 is a deficient number, since it is larger than the sum of its proper divisors (1).

210010112122121 is an equidigital number, since it uses as much as digits as its factorization.

210010112122121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 210010112122121 its reverse (121221211010012), we get a palindrome (331231323132133).

The spelling of 210010112122121 in words is "two hundred ten trillion, ten billion, one hundred twelve million, one hundred twenty-two thousand, one hundred twenty-one".