212118187 has 2 divisors, whose sum is σ = 212118188. Its totient is φ = 212118186.

The previous prime is 212118143. The next prime is 212118227. The reversal of 212118187 is 781811212.

212118187 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 not a de Polignac number, because 212118187 - 2¹¹ = 212116139 is a prime.

It is not a weakly prime, because it can be changed into another prime (212118287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106059093 + 106059094.

It is an arithmetic number, because the mean of its divisors is an integer number (106059094).

Almost surely, 2^212118187 is an apocalyptic number.

212118187 is a deficient number, since it is larger than the sum of its proper divisors (1).

212118187 is an equidigital number, since it uses as much as digits as its factorization.

212118187 is an evil number, because the sum of its binary digits is even.

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

The square root of 212118187 is about 14564.2777713143. The cubic root of 212118187 is about 596.3839798130.

Adding to 212118187 its reverse (781811212), we get a palindrome (993929399).

The spelling of 212118187 in words is "two hundred twelve million, one hundred eighteen thousand, one hundred eighty-seven".