133323122981 has 2 divisors, whose sum is σ = 133323122982. Its totient is φ = 133323122980.

The previous prime is 133323122927. The next prime is 133323123047. The reversal of 133323122981 is 189221323331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125266444900 + 8056678081 = 353930^2 + 89759^2 .

It is a cyclic number.

It is not a de Polignac number, because 133323122981 - 2¹⁴ = 133323106597 is a prime.

It is a super-2 number, since 2×133323122981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133323127981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66661561490 + 66661561491.

It is an arithmetic number, because the mean of its divisors is an integer number (66661561491).

Almost surely, 2^133323122981 is an apocalyptic number.

It is an amenable number.

133323122981 is a deficient number, since it is larger than the sum of its proper divisors (1).

133323122981 is an equidigital number, since it uses as much as digits as its factorization.

133323122981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 38.

It can be divided in two parts, 13332 and 3122981, that added together give a palindrome (3136313).

The spelling of 133323122981 in words is "one hundred thirty-three billion, three hundred twenty-three million, one hundred twenty-two thousand, nine hundred eighty-one".