212110123 has 2 divisors, whose sum is σ = 212110124. Its totient is φ = 212110122.

The previous prime is 212110121. The next prime is 212110127. The reversal of 212110123 is 321011212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212110123 - 2¹ = 212110121 is a prime.

Together with 212110121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212110121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106055061 + 106055062.

It is an arithmetic number, because the mean of its divisors is an integer number (106055062).

Almost surely, 2^212110123 is an apocalyptic number.

212110123 is a deficient number, since it is larger than the sum of its proper divisors (1).

212110123 is an equidigital number, since it uses as much as digits as its factorization.

212110123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 212110123 is about 14564.0009269431. Note that the first 3 decimals coincide. The cubic root of 212110123 is about 596.3764222317.

Adding to 212110123 its reverse (321011212), we get a palindrome (533121335).

The spelling of 212110123 in words is "two hundred twelve million, one hundred ten thousand, one hundred twenty-three".