120311211217 has 2 divisors, whose sum is σ = 120311211218. Its totient is φ = 120311211216.

The previous prime is 120311211197. The next prime is 120311211227. The reversal of 120311211217 is 712112113021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68035418896 + 52275792321 = 260836^2 + 228639^2 .

It is a cyclic number.

It is not a de Polignac number, because 120311211217 - 2⁷ = 120311211089 is a prime.

It is not a weakly prime, because it can be changed into another prime (120311211227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60155605608 + 60155605609.

It is an arithmetic number, because the mean of its divisors is an integer number (60155605609).

Almost surely, 2^120311211217 is an apocalyptic number.

It is an amenable number.

120311211217 is a deficient number, since it is larger than the sum of its proper divisors (1).

120311211217 is an equidigital number, since it uses as much as digits as its factorization.

120311211217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 22.

Adding to 120311211217 its reverse (712112113021), we get a palindrome (832423324238).

The spelling of 120311211217 in words is "one hundred twenty billion, three hundred eleven million, two hundred eleven thousand, two hundred seventeen".