133222321 has 2 divisors, whose sum is σ = 133222322. Its totient is φ = 133222320.

The previous prime is 133222301. The next prime is 133222391. The reversal of 133222321 is 123222331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130850721 + 2371600 = 11439^2 + 1540^2 .

It is a cyclic number.

It is not a de Polignac number, because 133222321 - 2⁵ = 133222289 is a prime.

It is not a weakly prime, because it can be changed into another prime (133222301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66611160 + 66611161.

It is an arithmetic number, because the mean of its divisors is an integer number (66611161).

Almost surely, 2^133222321 is an apocalyptic number.

It is an amenable number.

133222321 is a deficient number, since it is larger than the sum of its proper divisors (1).

133222321 is an equidigital number, since it uses as much as digits as its factorization.

133222321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 19.

The square root of 133222321 is about 11542.1974077729. The cubic root of 133222321 is about 510.7311325648.

Adding to 133222321 its reverse (123222331), we get a palindrome (256444652).

It can be divided in two parts, 1332 and 22321, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 133222321 in words is "one hundred thirty-three million, two hundred twenty-two thousand, three hundred twenty-one".