212102089 has 2 divisors, whose sum is σ = 212102090. Its totient is φ = 212102088.

The previous prime is 212102039. The next prime is 212102153. The reversal of 212102089 is 980201212.

212102089 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., 141205689 + 70896400 = 11883^2 + 8420^2 .

It is a cyclic number.

It is not a de Polignac number, because 212102089 - 2⁹ = 212101577 is a prime.

It is a super-4 number, since 4×212102089⁴ (a number of 34 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (212102039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051044 + 106051045.

It is an arithmetic number, because the mean of its divisors is an integer number (106051045).

Almost surely, 2^212102089 is an apocalyptic number.

It is an amenable number.

212102089 is a deficient number, since it is larger than the sum of its proper divisors (1).

212102089 is an equidigital number, since it uses as much as digits as its factorization.

212102089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 212102089 is about 14563.7251072657. The cubic root of 212102089 is about 596.3688925758.

The spelling of 212102089 in words is "two hundred twelve million, one hundred two thousand, eighty-nine".