20203312133 has 2 divisors, whose sum is σ = 20203312134. Its totient is φ = 20203312132.

The previous prime is 20203312127. The next prime is 20203312183. The reversal of 20203312133 is 33121330202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19679039524 + 524272609 = 140282^2 + 22897^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203312133 - 2¹⁶ = 20203246597 is a prime.

It is a super-2 number, since 2×20203312133² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20203312183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101656066 + 10101656067.

It is an arithmetic number, because the mean of its divisors is an integer number (10101656067).

Almost surely, 2^20203312133 is an apocalyptic number.

It is an amenable number.

20203312133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203312133 is an equidigital number, since it uses as much as digits as its factorization.

20203312133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20203312133 its reverse (33121330202), we get a palindrome (53324642335).

The spelling of 20203312133 in words is "twenty billion, two hundred three million, three hundred twelve thousand, one hundred thirty-three".