12212120101117 has 2 divisors, whose sum is σ = 12212120101118. Its totient is φ = 12212120101116.

The previous prime is 12212120101091. The next prime is 12212120101151. The reversal of 12212120101117 is 71110102121221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10893834937561 + 1318285163556 = 3300581^2 + 1148166^2 .

It is an emirp because it is prime and its reverse (71110102121221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12212120101117 - 2¹⁹ = 12212119576829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212120101217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106060050558 + 6106060050559.

It is an arithmetic number, because the mean of its divisors is an integer number (6106060050559).

Almost surely, 2^{12212120101117} is an apocalyptic number.

It is an amenable number.

12212120101117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212120101117 is an equidigital number, since it uses as much as digits as its factorization.

12212120101117 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 22.

Adding to 12212120101117 its reverse (71110102121221), we get a palindrome (83322222222338).

The spelling of 12212120101117 in words is "twelve trillion, two hundred twelve billion, one hundred twenty million, one hundred one thousand, one hundred seventeen".