12212021071 has 2 divisors, whose sum is σ = 12212021072. Its totient is φ = 12212021070.

The previous prime is 12212020981. The next prime is 12212021083. The reversal of 12212021071 is 17012021221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212021071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212021671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106010535 + 6106010536.

It is an arithmetic number, because the mean of its divisors is an integer number (6106010536).

Almost surely, 2^12212021071 is an apocalyptic number.

12212021071 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212021071 is an equidigital number, since it uses as much as digits as its factorization.

12212021071 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12212021071 its reverse (17012021221), we get a palindrome (29224042292).

The spelling of 12212021071 in words is "twelve billion, two hundred twelve million, twenty-one thousand, seventy-one".