22001212110209 has 2 divisors, whose sum is σ = 22001212110210. Its totient is φ = 22001212110208.

The previous prime is 22001212110191. The next prime is 22001212110239. The reversal of 22001212110209 is 90201121210022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19884687600625 + 2116524509584 = 4459225^2 + 1454828^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22001212110209 is a prime.

It is not a weakly prime, because it can be changed into another prime (22001212110239) 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, 11000606055104 + 11000606055105.

It is an arithmetic number, because the mean of its divisors is an integer number (11000606055105).

Almost surely, 2^{22001212110209} is an apocalyptic number.

It is an amenable number.

22001212110209 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001212110209 is an equidigital number, since it uses as much as digits as its factorization.

22001212110209 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 22001212110209 in words is "twenty-two trillion, one billion, two hundred twelve million, one hundred ten thousand, two hundred nine".