212011187 has 2 divisors, whose sum is σ = 212011188. Its totient is φ = 212011186.

The previous prime is 212011169. The next prime is 212011193. The reversal of 212011187 is 781110212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212011187 - 2¹⁴ = 211994803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212011117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005593 + 106005594.

It is an arithmetic number, because the mean of its divisors is an integer number (106005594).

Almost surely, 2^212011187 is an apocalyptic number.

212011187 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011187 is an equidigital number, since it uses as much as digits as its factorization.

212011187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 212011187 is about 14560.6039366504. The cubic root of 212011187 is about 596.2836838104.

Adding to 212011187 its reverse (781110212), we get a palindrome (993121399).

The spelling of 212011187 in words is "two hundred twelve million, eleven thousand, one hundred eighty-seven".