20112133 has 2 divisors, whose sum is σ = 20112134. Its totient is φ = 20112132.

The previous prime is 20112119. The next prime is 20112151. The reversal of 20112133 is 33121102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15626209 + 4485924 = 3953^2 + 2118^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112133 - 2⁹ = 20111621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056066 + 10056067.

It is an arithmetic number, because the mean of its divisors is an integer number (10056067).

Almost surely, 2^20112133 is an apocalyptic number.

It is an amenable number.

20112133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112133 is an equidigital number, since it uses as much as digits as its factorization.

20112133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 20112133 is about 4484.6552821817. The cubic root of 20112133 is about 271.9481095145.

Adding to 20112133 its reverse (33121102), we get a palindrome (53233235).

The spelling of 20112133 in words is "twenty million, one hundred twelve thousand, one hundred thirty-three".