123212302289 has 2 divisors, whose sum is σ = 123212302290. Its totient is φ = 123212302288.

The previous prime is 123212302267. The next prime is 123212302379. The reversal of 123212302289 is 982203212321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117363111889 + 5849190400 = 342583^2 + 76480^2 .

It is a cyclic number.

It is not a de Polignac number, because 123212302289 - 2⁸ = 123212302033 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (123212302229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61606151144 + 61606151145.

It is an arithmetic number, because the mean of its divisors is an integer number (61606151145).

Almost surely, 2^123212302289 is an apocalyptic number.

It is an amenable number.

123212302289 is a deficient number, since it is larger than the sum of its proper divisors (1).

123212302289 is an equidigital number, since it uses as much as digits as its factorization.

123212302289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 123212302289 in words is "one hundred twenty-three billion, two hundred twelve million, three hundred two thousand, two hundred eighty-nine".