20333132021 has 2 divisors, whose sum is σ = 20333132022. Its totient is φ = 20333132020.

The previous prime is 20333132003. The next prime is 20333132051. The reversal of 20333132021 is 12023133302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16876867921 + 3456264100 = 129911^2 + 58790^2 .

It is a cyclic number.

It is not a de Polignac number, because 20333132021 - 2³⁰ = 19259390197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20333131984 and 20333132002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20333132051) 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, 10166566010 + 10166566011.

It is an arithmetic number, because the mean of its divisors is an integer number (10166566011).

Almost surely, 2^20333132021 is an apocalyptic number.

It is an amenable number.

20333132021 is a deficient number, since it is larger than the sum of its proper divisors (1).

20333132021 is an equidigital number, since it uses as much as digits as its factorization.

20333132021 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 20333132021 its reverse (12023133302), we get a palindrome (32356265323).

The spelling of 20333132021 in words is "twenty billion, three hundred thirty-three million, one hundred thirty-two thousand, twenty-one".