210230220121 has 2 divisors, whose sum is σ = 210230220122. Its totient is φ = 210230220120.

The previous prime is 210230220103. The next prime is 210230220169. The reversal of 210230220121 is 121022032012.

It is a happy number.

210230220121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201704283225 + 8525936896 = 449115^2 + 92336^2 .

It is a cyclic number.

It is not a de Polignac number, because 210230220121 - 2⁹ = 210230219609 is a prime.

It is a super-3 number, since 3×210230220121³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 210230220095 and 210230220104.

It is not a weakly prime, because it can be changed into another prime (210230220821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105115110060 + 105115110061.

It is an arithmetic number, because the mean of its divisors is an integer number (105115110061).

Almost surely, 2^210230220121 is an apocalyptic number.

It is an amenable number.

210230220121 is a deficient number, since it is larger than the sum of its proper divisors (1).

210230220121 is an equidigital number, since it uses as much as digits as its factorization.

210230220121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 210230220121 its reverse (121022032012), we get a palindrome (331252252133).

The spelling of 210230220121 in words is "two hundred ten billion, two hundred thirty million, two hundred twenty thousand, one hundred twenty-one".