212023247797 has 2 divisors, whose sum is σ = 212023247798. Its totient is φ = 212023247796.

The previous prime is 212023247759. The next prime is 212023247809. The reversal of 212023247797 is 797742320212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208697303556 + 3325944241 = 456834^2 + 57671^2 .

It is a cyclic number.

It is not a de Polignac number, because 212023247797 - 2³¹ = 209875764149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212023247747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106011623898 + 106011623899.

It is an arithmetic number, because the mean of its divisors is an integer number (106011623899).

Almost surely, 2^212023247797 is an apocalyptic number.

It is an amenable number.

212023247797 is a deficient number, since it is larger than the sum of its proper divisors (1).

212023247797 is an equidigital number, since it uses as much as digits as its factorization.

212023247797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 592704, while the sum is 46.

The spelling of 212023247797 in words is "two hundred twelve billion, twenty-three million, two hundred forty-seven thousand, seven hundred ninety-seven".