212100307 has 2 divisors, whose sum is σ = 212100308. Its totient is φ = 212100306.

The previous prime is 212100299. The next prime is 212100337. The reversal of 212100307 is 703001212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212100307 - 2³ = 212100299 is a prime.

It is not a weakly prime, because it can be changed into another prime (212100337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106050153 + 106050154.

It is an arithmetic number, because the mean of its divisors is an integer number (106050154).

Almost surely, 2^212100307 is an apocalyptic number.

212100307 is a deficient number, since it is larger than the sum of its proper divisors (1).

212100307 is an equidigital number, since it uses as much as digits as its factorization.

212100307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 212100307 is about 14563.6639277347. The cubic root of 212100307 is about 596.3672224173.

Adding to 212100307 its reverse (703001212), we get a palindrome (915101519).

The spelling of 212100307 in words is "two hundred twelve million, one hundred thousand, three hundred seven".