212189113 has 2 divisors, whose sum is σ = 212189114. Its totient is φ = 212189112.

The previous prime is 212189059. The next prime is 212189129. The reversal of 212189113 is 311981212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202435984 + 9753129 = 14228^2 + 3123^2 .

It is a cyclic number.

It is not a de Polignac number, because 212189113 - 2⁹ = 212188601 is a prime.

It is a super-3 number, since 3×212189113³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (212189713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106094556 + 106094557.

It is an arithmetic number, because the mean of its divisors is an integer number (106094557).

Almost surely, 2^212189113 is an apocalyptic number.

It is an amenable number.

212189113 is a deficient number, since it is larger than the sum of its proper divisors (1).

212189113 is an equidigital number, since it uses as much as digits as its factorization.

212189113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 28.

The square root of 212189113 is about 14566.7124980210. The cubic root of 212189113 is about 596.4504434154.

The spelling of 212189113 in words is "two hundred twelve million, one hundred eighty-nine thousand, one hundred thirteen".