200121133133 has 2 divisors, whose sum is σ = 200121133134. Its totient is φ = 200121133132.

The previous prime is 200121133117. The next prime is 200121133151. The reversal of 200121133133 is 331331121002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160963847209 + 39157285924 = 401203^2 + 197882^2 .

It is a cyclic number.

It is not a de Polignac number, because 200121133133 - 2⁴ = 200121133117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121133193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060566566 + 100060566567.

It is an arithmetic number, because the mean of its divisors is an integer number (100060566567).

Almost surely, 2^200121133133 is an apocalyptic number.

It is an amenable number.

200121133133 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121133133 is an equidigital number, since it uses as much as digits as its factorization.

200121133133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 200121133133 its reverse (331331121002), we get a palindrome (531452254135).

The spelling of 200121133133 in words is "two hundred billion, one hundred twenty-one million, one hundred thirty-three thousand, one hundred thirty-three".