133323544342321 has 2 divisors, whose sum is σ = 133323544342322. Its totient is φ = 133323544342320.

The previous prime is 133323544342309. The next prime is 133323544342349. The reversal of 133323544342321 is 123243445323331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125438006407921 + 7885537934400 = 11199911^2 + 2808120^2 .

It is an emirp because it is prime and its reverse (123243445323331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133323544342321 - 2¹³ = 133323544334129 is a prime.

It is not a weakly prime, because it can be changed into another prime (133323544342721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66661772171160 + 66661772171161.

It is an arithmetic number, because the mean of its divisors is an integer number (66661772171161).

Almost surely, 2^{133323544342321} is an apocalyptic number.

It is an amenable number.

133323544342321 is a deficient number, since it is larger than the sum of its proper divisors (1).

133323544342321 is an equidigital number, since it uses as much as digits as its factorization.

133323544342321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 43.

Adding to 133323544342321 its reverse (123243445323331), we get a palindrome (256566989665652).

The spelling of 133323544342321 in words is "one hundred thirty-three trillion, three hundred twenty-three billion, five hundred forty-four million, three hundred forty-two thousand, three hundred twenty-one".