12210121229 has 2 divisors, whose sum is σ = 12210121230. Its totient is φ = 12210121228.

The previous prime is 12210121199. The next prime is 12210121289. The reversal of 12210121229 is 92212101221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11772684004 + 437437225 = 108502^2 + 20915^2 .

It is an emirp because it is prime and its reverse (92212101221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12210121229 - 2²⁰ = 12209072653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12210121289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105060614 + 6105060615.

It is an arithmetic number, because the mean of its divisors is an integer number (6105060615).

Almost surely, 2^12210121229 is an apocalyptic number.

It is an amenable number.

12210121229 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210121229 is an equidigital number, since it uses as much as digits as its factorization.

12210121229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 12210121229 in words is "twelve billion, two hundred ten million, one hundred twenty-one thousand, two hundred twenty-nine".