133321300131221 has 2 divisors, whose sum is σ = 133321300131222. Its totient is φ = 133321300131220.

The previous prime is 133321300131203. The next prime is 133321300131247. The reversal of 133321300131221 is 122131003123331.

It is an a-pointer prime, because the next prime (133321300131247) can be obtained adding 133321300131221 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107596826206321 + 25724473924900 = 10372889^2 + 5071930^2 .

It is a cyclic number.

It is not a de Polignac number, because 133321300131221 - 2¹⁴ = 133321300114837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133321300131121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66660650065610 + 66660650065611.

It is an arithmetic number, because the mean of its divisors is an integer number (66660650065611).

Almost surely, 2^{133321300131221} is an apocalyptic number.

It is an amenable number.

133321300131221 is a deficient number, since it is larger than the sum of its proper divisors (1).

133321300131221 is an equidigital number, since it uses as much as digits as its factorization.

133321300131221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 133321300131221 its reverse (122131003123331), we get a palindrome (255452303254552).

The spelling of 133321300131221 in words is "one hundred thirty-three trillion, three hundred twenty-one billion, three hundred million, one hundred thirty-one thousand, two hundred twenty-one".