212101200187 has 2 divisors, whose sum is σ = 212101200188. Its totient is φ = 212101200186.

The previous prime is 212101200173. The next prime is 212101200211. The reversal of 212101200187 is 781002101212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212101200187 is a prime.

It is not a weakly prime, because it can be changed into another prime (212101200127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106050600093 + 106050600094.

It is an arithmetic number, because the mean of its divisors is an integer number (106050600094).

Almost surely, 2^212101200187 is an apocalyptic number.

212101200187 is a deficient number, since it is larger than the sum of its proper divisors (1).

212101200187 is an equidigital number, since it uses as much as digits as its factorization.

212101200187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 212101200187 its reverse (781002101212), we get a palindrome (993103301399).

The spelling of 212101200187 in words is "two hundred twelve billion, one hundred one million, two hundred thousand, one hundred eighty-seven".