210113122112281 has 2 divisors, whose sum is σ = 210113122112282. Its totient is φ = 210113122112280.

The previous prime is 210113122112237. The next prime is 210113122112303. The reversal of 210113122112281 is 182211221311012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202557907856656 + 7555214255625 = 14232284^2 + 2748675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210113122112281 is a prime.

It is a super-2 number, since 2×210113122112281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210113122112381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105056561056140 + 105056561056141.

It is an arithmetic number, because the mean of its divisors is an integer number (105056561056141).

Almost surely, 2^{210113122112281} is an apocalyptic number.

It is an amenable number.

210113122112281 is a deficient number, since it is larger than the sum of its proper divisors (1).

210113122112281 is an equidigital number, since it uses as much as digits as its factorization.

210113122112281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 28.

Adding to 210113122112281 its reverse (182211221311012), we get a palindrome (392324343423293).

The spelling of 210113122112281 in words is "two hundred ten trillion, one hundred thirteen billion, one hundred twenty-two million, one hundred twelve thousand, two hundred eighty-one".