102211213817 has 2 divisors, whose sum is σ = 102211213818. Its totient is φ = 102211213816.

The previous prime is 102211213813. The next prime is 102211213829. The reversal of 102211213817 is 718312112201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95285811856 + 6925401961 = 308684^2 + 83219^2 .

It is a cyclic number.

It is not a de Polignac number, because 102211213817 - 2² = 102211213813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102211213817.

It is not a weakly prime, because it can be changed into another prime (102211213813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105606908 + 51105606909.

It is an arithmetic number, because the mean of its divisors is an integer number (51105606909).

Almost surely, 2^102211213817 is an apocalyptic number.

It is an amenable number.

102211213817 is a deficient number, since it is larger than the sum of its proper divisors (1).

102211213817 is an equidigital number, since it uses as much as digits as its factorization.

102211213817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 29.

The spelling of 102211213817 in words is "one hundred two billion, two hundred eleven million, two hundred thirteen thousand, eight hundred seventeen".