210200112110981 has 2 divisors, whose sum is σ = 210200112110982. Its totient is φ = 210200112110980.

The previous prime is 210200112110971. The next prime is 210200112111013. The reversal of 210200112110981 is 189011211002012.

210200112110981 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., 141461669662756 + 68738442448225 = 11893766^2 + 8290865^2 .

It is a cyclic number.

It is not a de Polignac number, because 210200112110981 - 2¹⁰ = 210200112109957 is a prime.

It is a super-2 number, since 2×210200112110981² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210200112110971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105100056055490 + 105100056055491.

It is an arithmetic number, because the mean of its divisors is an integer number (105100056055491).

Almost surely, 2^{210200112110981} is an apocalyptic number.

It is an amenable number.

210200112110981 is a deficient number, since it is larger than the sum of its proper divisors (1).

210200112110981 is an equidigital number, since it uses as much as digits as its factorization.

210200112110981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 29.

Adding to 210200112110981 its reverse (189011211002012), we get a palindrome (399211323112993).

The spelling of 210200112110981 in words is "two hundred ten trillion, two hundred billion, one hundred twelve million, one hundred ten thousand, nine hundred eighty-one".