120212210112217 has 2 divisors, whose sum is σ = 120212210112218. Its totient is φ = 120212210112216.

The previous prime is 120212210112191. The next prime is 120212210112229. The reversal of 120212210112217 is 712211012212021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84935927812761 + 35276282299456 = 9216069^2 + 5939384^2 .

It is a cyclic number.

It is not a de Polignac number, because 120212210112217 - 2¹⁹ = 120212209587929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120212210112191 and 120212210112200.

It is not a weakly prime, because it can be changed into another prime (120212210112317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60106105056108 + 60106105056109.

It is an arithmetic number, because the mean of its divisors is an integer number (60106105056109).

Almost surely, 2^{120212210112217} is an apocalyptic number.

It is an amenable number.

120212210112217 is a deficient number, since it is larger than the sum of its proper divisors (1).

120212210112217 is an equidigital number, since it uses as much as digits as its factorization.

120212210112217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 120212210112217 its reverse (712211012212021), we get a palindrome (832423222324238).

The spelling of 120212210112217 in words is "one hundred twenty trillion, two hundred twelve billion, two hundred ten million, one hundred twelve thousand, two hundred seventeen".