212066266453 has 2 divisors, whose sum is σ = 212066266454. Its totient is φ = 212066266452.

The previous prime is 212066266397. The next prime is 212066266463. The reversal of 212066266453 is 354662660212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194002368849 + 18063897604 = 440457^2 + 134402^2 .

It is a cyclic number.

It is not a de Polignac number, because 212066266453 - 2¹⁷ = 212066135381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212066266463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106033133226 + 106033133227.

It is an arithmetic number, because the mean of its divisors is an integer number (106033133227).

Almost surely, 2^212066266453 is an apocalyptic number.

It is an amenable number.

212066266453 is a deficient number, since it is larger than the sum of its proper divisors (1).

212066266453 is an equidigital number, since it uses as much as digits as its factorization.

212066266453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 212066266453 in words is "two hundred twelve billion, sixty-six million, two hundred sixty-six thousand, four hundred fifty-three".