201323122193 has 2 divisors, whose sum is σ = 201323122194. Its totient is φ = 201323122192.

The previous prime is 201323122151. The next prime is 201323122207. The reversal of 201323122193 is 391221323102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144052888849 + 57270233344 = 379543^2 + 239312^2 .

It is a cyclic number.

It is not a de Polignac number, because 201323122193 - 2¹⁶ = 201323056657 is a prime.

It is not a weakly prime, because it can be changed into another prime (201323922193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100661561096 + 100661561097.

It is an arithmetic number, because the mean of its divisors is an integer number (100661561097).

Almost surely, 2^201323122193 is an apocalyptic number.

It is an amenable number.

201323122193 is a deficient number, since it is larger than the sum of its proper divisors (1).

201323122193 is an equidigital number, since it uses as much as digits as its factorization.

201323122193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

Adding to 201323122193 its reverse (391221323102), we get a palindrome (592544445295).

The spelling of 201323122193 in words is "two hundred one billion, three hundred twenty-three million, one hundred twenty-two thousand, one hundred ninety-three".