210210043120123 has 2 divisors, whose sum is σ = 210210043120124. Its totient is φ = 210210043120122.

The previous prime is 210210043120109. The next prime is 210210043120127. The reversal of 210210043120123 is 321021340012012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210210043120123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210210043120094 and 210210043120103.

It is not a weakly prime, because it can be changed into another prime (210210043120127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105105021560061 + 105105021560062.

It is an arithmetic number, because the mean of its divisors is an integer number (105105021560062).

Almost surely, 2^{210210043120123} is an apocalyptic number.

210210043120123 is a deficient number, since it is larger than the sum of its proper divisors (1).

210210043120123 is an equidigital number, since it uses as much as digits as its factorization.

210210043120123 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 22.

Adding to 210210043120123 its reverse (321021340012012), we get a palindrome (531231383132135).

The spelling of 210210043120123 in words is "two hundred ten trillion, two hundred ten billion, forty-three million, one hundred twenty thousand, one hundred twenty-three".