12212244221291 has 2 divisors, whose sum is σ = 12212244221292. Its totient is φ = 12212244221290.

The previous prime is 12212244221267. The next prime is 12212244221299. The reversal of 12212244221291 is 19212244221221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212244221291 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212244221299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106122110645 + 6106122110646.

It is an arithmetic number, because the mean of its divisors is an integer number (6106122110646).

Almost surely, 2^{12212244221291} is an apocalyptic number.

12212244221291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212244221291 is an equidigital number, since it uses as much as digits as its factorization.

12212244221291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 35.

The spelling of 12212244221291 in words is "twelve trillion, two hundred twelve billion, two hundred forty-four million, two hundred twenty-one thousand, two hundred ninety-one".