12212120071 has 2 divisors, whose sum is σ = 12212120072. Its totient is φ = 12212120070.

The previous prime is 12212120069. The next prime is 12212120077. The reversal of 12212120071 is 17002121221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12212120071 - 2¹ = 12212120069 is a prime.

Together with 12212120069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212120077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106060035 + 6106060036.

It is an arithmetic number, because the mean of its divisors is an integer number (6106060036).

Almost surely, 2^12212120071 is an apocalyptic number.

12212120071 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212120071 is an equidigital number, since it uses as much as digits as its factorization.

12212120071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 12212120071 its reverse (17002121221), we get a palindrome (29214241292).

The spelling of 12212120071 in words is "twelve billion, two hundred twelve million, one hundred twenty thousand, seventy-one".