212303120312123 has 2 divisors, whose sum is σ = 212303120312124. Its totient is φ = 212303120312122.

The previous prime is 212303120312111. The next prime is 212303120312149. The reversal of 212303120312123 is 321213021303212.

It is an a-pointer prime, because the next prime (212303120312149) can be obtained adding 212303120312123 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212303120312123 - 2¹⁰ = 212303120311099 is a prime.

It is a super-2 number, since 2×212303120312123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212303120312092 and 212303120312101.

It is not a weakly prime, because it can be changed into another prime (212303120312323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106151560156061 + 106151560156062.

It is an arithmetic number, because the mean of its divisors is an integer number (106151560156062).

Almost surely, 2^{212303120312123} is an apocalyptic number.

212303120312123 is a deficient number, since it is larger than the sum of its proper divisors (1).

212303120312123 is an equidigital number, since it uses as much as digits as its factorization.

212303120312123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 212303120312123 its reverse (321213021303212), we get a palindrome (533516141615335).

The spelling of 212303120312123 in words is "two hundred twelve trillion, three hundred three billion, one hundred twenty million, three hundred twelve thousand, one hundred twenty-three".