200012221091 has 2 divisors, whose sum is σ = 200012221092. Its totient is φ = 200012221090.

The previous prime is 200012221081. The next prime is 200012221109. The reversal of 200012221091 is 190122210002.

It is a happy number.

Together with next prime (200012221109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200012221091 - 2⁶ = 200012221027 is a prime.

It is not a weakly prime, because it can be changed into another prime (200012221001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100006110545 + 100006110546.

It is an arithmetic number, because the mean of its divisors is an integer number (100006110546).

Almost surely, 2^200012221091 is an apocalyptic number.

200012221091 is a deficient number, since it is larger than the sum of its proper divisors (1).

200012221091 is an equidigital number, since it uses as much as digits as its factorization.

200012221091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 200012221091 its reverse (190122210002), we get a palindrome (390134431093).

The spelling of 200012221091 in words is "two hundred billion, twelve million, two hundred twenty-one thousand, ninety-one".