212213189 has 2 divisors, whose sum is σ = 212213190. Its totient is φ = 212213188.

The previous prime is 212213179. The next prime is 212213231. The reversal of 212213189 is 981312212.

212213189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196925089 + 15288100 = 14033^2 + 3910^2 .

It is a cyclic number.

It is not a de Polignac number, because 212213189 - 2⁴ = 212213173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212213129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106594 + 106106595.

It is an arithmetic number, because the mean of its divisors is an integer number (106106595).

Almost surely, 2^212213189 is an apocalyptic number.

It is an amenable number.

212213189 is a deficient number, since it is larger than the sum of its proper divisors (1).

212213189 is an equidigital number, since it uses as much as digits as its factorization.

212213189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 29.

The square root of 212213189 is about 14567.5388793028. The cubic root of 212213189 is about 596.4730012767.

The spelling of 212213189 in words is "two hundred twelve million, two hundred thirteen thousand, one hundred eighty-nine".