12101020201217 has 2 divisors, whose sum is σ = 12101020201218. Its totient is φ = 12101020201216.

The previous prime is 12101020201201. The next prime is 12101020201261. The reversal of 12101020201217 is 71210202010121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8977939535041 + 3123080666176 = 2996321^2 + 1767224^2 .

It is a cyclic number.

It is not a de Polignac number, because 12101020201217 - 2⁴ = 12101020201201 is a prime.

It is not a weakly prime, because it can be changed into another prime (12101020201297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050510100608 + 6050510100609.

It is an arithmetic number, because the mean of its divisors is an integer number (6050510100609).

Almost surely, 2^{12101020201217} is an apocalyptic number.

It is an amenable number.

12101020201217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101020201217 is an equidigital number, since it uses as much as digits as its factorization.

12101020201217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 12101020201217 its reverse (71210202010121), we get a palindrome (83311222211338).

The spelling of 12101020201217 in words is "twelve trillion, one hundred one billion, twenty million, two hundred one thousand, two hundred seventeen".