201200891 has 2 divisors, whose sum is σ = 201200892. Its totient is φ = 201200890.

The previous prime is 201200873. The next prime is 201200897. The reversal of 201200891 is 198002102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201200891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201200897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600445 + 100600446.

It is an arithmetic number, because the mean of its divisors is an integer number (100600446).

Almost surely, 2^201200891 is an apocalyptic number.

201200891 is a deficient number, since it is larger than the sum of its proper divisors (1).

201200891 is an equidigital number, since it uses as much as digits as its factorization.

201200891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 201200891 is about 14184.5299886884. The cubic root of 201200891 is about 585.9716882655.

Adding to 201200891 its reverse (198002102), we get a palindrome (399202993).

The spelling of 201200891 in words is "two hundred one million, two hundred thousand, eight hundred ninety-one".