212021122297 has 2 divisors, whose sum is σ = 212021122298. Its totient is φ = 212021122296.

The previous prime is 212021122279. The next prime is 212021122309. The reversal of 212021122297 is 792221120212.

Together with previous prime (212021122279) 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., 199258675456 + 12762446841 = 446384^2 + 112971^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021122297 - 2¹¹ = 212021120249 is a prime.

It is not a weakly prime, because it can be changed into another prime (212021122097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010561148 + 106010561149.

It is an arithmetic number, because the mean of its divisors is an integer number (106010561149).

Almost surely, 2^212021122297 is an apocalyptic number.

It is an amenable number.

212021122297 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021122297 is an equidigital number, since it uses as much as digits as its factorization.

212021122297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 212021122297 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-two thousand, two hundred ninety-seven".