212102001011917 has 2 divisors, whose sum is σ = 212102001011918. Its totient is φ = 212102001011916.

The previous prime is 212102001011909. The next prime is 212102001012017. The reversal of 212102001011917 is 719110100201212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209539347524676 + 2562653487241 = 14475474^2 + 1600829^2 .

It is a cyclic number.

It is not a de Polignac number, because 212102001011917 - 2³ = 212102001011909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212102001015917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051000505958 + 106051000505959.

It is an arithmetic number, because the mean of its divisors is an integer number (106051000505959).

Almost surely, 2^{212102001011917} is an apocalyptic number.

It is an amenable number.

212102001011917 is a deficient number, since it is larger than the sum of its proper divisors (1).

212102001011917 is an equidigital number, since it uses as much as digits as its factorization.

212102001011917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 28.

The spelling of 212102001011917 in words is "two hundred twelve trillion, one hundred two billion, one million, eleven thousand, nine hundred seventeen".