2001323221133 has 2 divisors, whose sum is σ = 2001323221134. Its totient is φ = 2001323221132.

The previous prime is 2001323221127. The next prime is 2001323221141. The reversal of 2001323221133 is 3311223231002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1571881540009 + 429441681124 = 1253747^2 + 655318^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001323221133 - 2¹² = 2001323217037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001323221099 and 2001323221108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001323221123) 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, 1000661610566 + 1000661610567.

It is an arithmetic number, because the mean of its divisors is an integer number (1000661610567).

Almost surely, 2^{2001323221133} is an apocalyptic number.

It is an amenable number.

2001323221133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001323221133 is an equidigital number, since it uses as much as digits as its factorization.

2001323221133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2001323221133 its reverse (3311223231002), we get a palindrome (5312546452135).

The spelling of 2001323221133 in words is "two trillion, one billion, three hundred twenty-three million, two hundred twenty-one thousand, one hundred thirty-three".