12021123202217 has 2 divisors, whose sum is σ = 12021123202218. Its totient is φ = 12021123202216.

The previous prime is 12021123202189. The next prime is 12021123202243. The reversal of 12021123202217 is 71220232112021.

It is a happy number.

It is an a-pointer prime, because the next prime (12021123202243) can be obtained adding 12021123202217 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7435961794816 + 4585161407401 = 2726896^2 + 2141299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021123202217 is a prime.

It is not a weakly prime, because it can be changed into another prime (12021123202247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010561601108 + 6010561601109.

It is an arithmetic number, because the mean of its divisors is an integer number (6010561601109).

Almost surely, 2^{12021123202217} is an apocalyptic number.

It is an amenable number.

12021123202217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021123202217 is an equidigital number, since it uses as much as digits as its factorization.

12021123202217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 12021123202217 its reverse (71220232112021), we get a palindrome (83241355314238).

The spelling of 12021123202217 in words is "twelve trillion, twenty-one billion, one hundred twenty-three million, two hundred two thousand, two hundred seventeen".