212033009 has 2 divisors, whose sum is σ = 212033010. Its totient is φ = 212033008.

The previous prime is 212032981. The next prime is 212033023. The reversal of 212033009 is 900330212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211062784 + 970225 = 14528^2 + 985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212033009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212033039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106016504 + 106016505.

It is an arithmetic number, because the mean of its divisors is an integer number (106016505).

Almost surely, 2^212033009 is an apocalyptic number.

It is an amenable number.

212033009 is a deficient number, since it is larger than the sum of its proper divisors (1).

212033009 is an equidigital number, since it uses as much as digits as its factorization.

212033009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 212033009 is about 14561.3532681547. The cubic root of 212033009 is about 596.3041413097.

The spelling of 212033009 in words is "two hundred twelve million, thirty-three thousand, nine".