212102112021187 has 2 divisors, whose sum is σ = 212102112021188. Its totient is φ = 212102112021186.

The previous prime is 212102112021109. The next prime is 212102112021203. The reversal of 212102112021187 is 781120211201212.

It is a happy number.

212102112021187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212102112021187 is a prime.

It is not a weakly prime, because it can be changed into another prime (212102112021887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051056010593 + 106051056010594.

It is an arithmetic number, because the mean of its divisors is an integer number (106051056010594).

Almost surely, 2^{212102112021187} is an apocalyptic number.

212102112021187 is a deficient number, since it is larger than the sum of its proper divisors (1).

212102112021187 is an equidigital number, since it uses as much as digits as its factorization.

212102112021187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 31.

Adding to 212102112021187 its reverse (781120211201212), we get a palindrome (993222323222399).

The spelling of 212102112021187 in words is "two hundred twelve trillion, one hundred two billion, one hundred twelve million, twenty-one thousand, one hundred eighty-seven".