212220020042417 has 2 divisors, whose sum is σ = 212220020042418. Its totient is φ = 212220020042416.

The previous prime is 212220020042341. The next prime is 212220020042419. The reversal of 212220020042417 is 714240020022212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113004893901376 + 99215126141041 = 10630376^2 + 9960679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212220020042417 is a prime.

Together with 212220020042419, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212220020042417.

It is not a weakly prime, because it can be changed into another prime (212220020042419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106110010021208 + 106110010021209.

It is an arithmetic number, because the mean of its divisors is an integer number (106110010021209).

Almost surely, 2^{212220020042417} is an apocalyptic number.

It is an amenable number.

212220020042417 is a deficient number, since it is larger than the sum of its proper divisors (1).

212220020042417 is an equidigital number, since it uses as much as digits as its factorization.

212220020042417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 29.

Adding to 212220020042417 its reverse (714240020022212), we get a palindrome (926460040064629).

The spelling of 212220020042417 in words is "two hundred twelve trillion, two hundred twenty billion, twenty million, forty-two thousand, four hundred seventeen".