20002133 has 2 divisors, whose sum is σ = 20002134. Its totient is φ = 20002132.

The previous prime is 20002123. The next prime is 20002159. The reversal of 20002133 is 33120002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17156164 + 2845969 = 4142^2 + 1687^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002133 - 2¹⁸ = 19739989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001066 + 10001067.

It is an arithmetic number, because the mean of its divisors is an integer number (10001067).

Almost surely, 2^20002133 is an apocalyptic number.

It is an amenable number.

20002133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002133 is an equidigital number, since it uses as much as digits as its factorization.

20002133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20002133 is about 4472.3744252913. The cubic root of 20002133 is about 271.4514110711.

Adding to 20002133 its reverse (33120002), we get a palindrome (53122135).

The spelling of 20002133 in words is "twenty million, two thousand, one hundred thirty-three".