2112001217 has 2 divisors, whose sum is σ = 2112001218. Its totient is φ = 2112001216.

The previous prime is 2112001211. The next prime is 2112001219. The reversal of 2112001217 is 7121002112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1219127056 + 892874161 = 34916^2 + 29881^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112001217 - 2³⁰ = 1038259393 is a prime.

Together with 2112001219, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2112001195 and 2112001204.

It is not a weakly prime, because it can be changed into another prime (2112001211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056000608 + 1056000609.

It is an arithmetic number, because the mean of its divisors is an integer number (1056000609).

Almost surely, 2^2112001217 is an apocalyptic number.

It is an amenable number.

2112001217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112001217 is an equidigital number, since it uses as much as digits as its factorization.

2112001217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 2112001217 is about 45956.5144130840. The cubic root of 2112001217 is about 1283.0139784357.

Adding to 2112001217 its reverse (7121002112), we get a palindrome (9233003329).

The spelling of 2112001217 in words is "two billion, one hundred twelve million, one thousand, two hundred seventeen".