211033312297 has 2 divisors, whose sum is σ = 211033312298. Its totient is φ = 211033312296.

The previous prime is 211033312279. The next prime is 211033312309. The reversal of 211033312297 is 792213330112.

Together with previous prime (211033312279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167200027801 + 43833284496 = 408901^2 + 209364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211033312297 is a prime.

It is not a weakly prime, because it can be changed into another prime (211033312247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105516656148 + 105516656149.

It is an arithmetic number, because the mean of its divisors is an integer number (105516656149).

Almost surely, 2^211033312297 is an apocalyptic number.

It is an amenable number.

211033312297 is a deficient number, since it is larger than the sum of its proper divisors (1).

211033312297 is an equidigital number, since it uses as much as digits as its factorization.

211033312297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The spelling of 211033312297 in words is "two hundred eleven billion, thirty-three million, three hundred twelve thousand, two hundred ninety-seven".