210120121241 has 2 divisors, whose sum is σ = 210120121242. Its totient is φ = 210120121240.

The previous prime is 210120121199. The next prime is 210120121247. The reversal of 210120121241 is 142121021012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165262575625 + 44857545616 = 406525^2 + 211796^2 .

It is a cyclic number.

It is not a de Polignac number, because 210120121241 - 2⁶ = 210120121177 is a prime.

It is not a weakly prime, because it can be changed into another prime (210120121247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060060620 + 105060060621.

It is an arithmetic number, because the mean of its divisors is an integer number (105060060621).

Almost surely, 2^210120121241 is an apocalyptic number.

It is an amenable number.

210120121241 is a deficient number, since it is larger than the sum of its proper divisors (1).

210120121241 is an equidigital number, since it uses as much as digits as its factorization.

210120121241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210120121241 its reverse (142121021012), we get a palindrome (352241142253).

The spelling of 210120121241 in words is "two hundred ten billion, one hundred twenty million, one hundred twenty-one thousand, two hundred forty-one".