212142104123 has 2 divisors, whose sum is σ = 212142104124. Its totient is φ = 212142104122.

The previous prime is 212142104099. The next prime is 212142104129. The reversal of 212142104123 is 321401241212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212142104123 - 2⁸ = 212142103867 is a prime.

It is not a weakly prime, because it can be changed into another prime (212142104129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106071052061 + 106071052062.

It is an arithmetic number, because the mean of its divisors is an integer number (106071052062).

Almost surely, 2^212142104123 is an apocalyptic number.

212142104123 is a deficient number, since it is larger than the sum of its proper divisors (1).

212142104123 is an equidigital number, since it uses as much as digits as its factorization.

212142104123 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 23.

Adding to 212142104123 its reverse (321401241212), we get a palindrome (533543345335).

The spelling of 212142104123 in words is "two hundred twelve billion, one hundred forty-two million, one hundred four thousand, one hundred twenty-three".