2112505517 has 2 divisors, whose sum is σ = 2112505518. Its totient is φ = 2112505516.

The previous prime is 2112505501. The next prime is 2112505523. The reversal of 2112505517 is 7155052112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2102589316 + 9916201 = 45854^2 + 3149^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112505517 - 2⁴ = 2112505501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2112505517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112525517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056252758 + 1056252759.

It is an arithmetic number, because the mean of its divisors is an integer number (1056252759).

Almost surely, 2^2112505517 is an apocalyptic number.

It is an amenable number.

2112505517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112505517 is an equidigital number, since it uses as much as digits as its factorization.

2112505517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3500, while the sum is 29.

The square root of 2112505517 is about 45962.0007941343. Note that the first 3 decimals coincide. The cubic root of 2112505517 is about 1283.1160889289.

Adding to 2112505517 its reverse (7155052112), we get a palindrome (9267557629).

The spelling of 2112505517 in words is "two billion, one hundred twelve million, five hundred five thousand, five hundred seventeen".