212212123 has 2 divisors, whose sum is σ = 212212124. Its totient is φ = 212212122.

The previous prime is 212212093. The next prime is 212212129. The reversal of 212212123 is 321212212.

It is a happy number.

212212123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212212123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212212097 and 212212106.

It is not a weakly prime, because it can be changed into another prime (212212129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106061 + 106106062.

It is an arithmetic number, because the mean of its divisors is an integer number (106106062).

Almost surely, 2^212212123 is an apocalyptic number.

212212123 is a deficient number, since it is larger than the sum of its proper divisors (1).

212212123 is an equidigital number, since it uses as much as digits as its factorization.

212212123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 16.

The square root of 212212123 is about 14567.5022910587. The cubic root of 212212123 is about 596.4720025306.

Adding to 212212123 its reverse (321212212), we get a palindrome (533424335).

The spelling of 212212123 in words is "two hundred twelve million, two hundred twelve thousand, one hundred twenty-three".