121212212027 has 2 divisors, whose sum is σ = 121212212028. Its totient is φ = 121212212026.

The previous prime is 121212212003. The next prime is 121212212029. The reversal of 121212212027 is 720212212121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121212212027 - 2³⁰ = 120138470203 is a prime.

Together with 121212212029, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121212211993 and 121212212011.

It is not a weakly prime, because it can be changed into another prime (121212212029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606106013 + 60606106014.

It is an arithmetic number, because the mean of its divisors is an integer number (60606106014).

Almost surely, 2^121212212027 is an apocalyptic number.

121212212027 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212212027 is an equidigital number, since it uses as much as digits as its factorization.

121212212027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 121212212027 its reverse (720212212121), we get a palindrome (841424424148).

The spelling of 121212212027 in words is "one hundred twenty-one billion, two hundred twelve million, two hundred twelve thousand, twenty-seven".