212119117897 has 2 divisors, whose sum is σ = 212119117898. Its totient is φ = 212119117896.

The previous prime is 212119117867. The next prime is 212119117913. The reversal of 212119117897 is 798711911212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179073695241 + 33045422656 = 423171^2 + 181784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212119117897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212119117897.

It is not a weakly prime, because it can be changed into another prime (212119117867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106059558948 + 106059558949.

It is an arithmetic number, because the mean of its divisors is an integer number (106059558949).

Almost surely, 2^212119117897 is an apocalyptic number.

It is an amenable number.

212119117897 is a deficient number, since it is larger than the sum of its proper divisors (1).

212119117897 is an equidigital number, since it uses as much as digits as its factorization.

212119117897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 49.

The spelling of 212119117897 in words is "two hundred twelve billion, one hundred nineteen million, one hundred seventeen thousand, eight hundred ninety-seven".