212012313917 has 2 divisors, whose sum is σ = 212012313918. Its totient is φ = 212012313916.

The previous prime is 212012313901. The next prime is 212012313949. The reversal of 212012313917 is 719313210212.

It is an a-pointer prime, because the next prime (212012313949) can be obtained adding 212012313917 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211925805316 + 86508601 = 460354^2 + 9301^2 .

It is a cyclic number.

It is not a de Polignac number, because 212012313917 - 2⁴ = 212012313901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212012312917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006156958 + 106006156959.

It is an arithmetic number, because the mean of its divisors is an integer number (106006156959).

Almost surely, 2^212012313917 is an apocalyptic number.

It is an amenable number.

212012313917 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012313917 is an equidigital number, since it uses as much as digits as its factorization.

212012313917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 212012313917 in words is "two hundred twelve billion, twelve million, three hundred thirteen thousand, nine hundred seventeen".