212445907 has 2 divisors, whose sum is σ = 212445908. Its totient is φ = 212445906.

The previous prime is 212445901. The next prime is 212445913. The reversal of 212445907 is 709544212.

It is a balanced prime because it is at equal distance from previous prime (212445901) and next prime (212445913).

It is a cyclic number.

It is not a de Polignac number, because 212445907 - 2¹¹ = 212443859 is a prime.

It is not a weakly prime, because it can be changed into another prime (212445901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106222953 + 106222954.

It is an arithmetic number, because the mean of its divisors is an integer number (106222954).

Almost surely, 2^212445907 is an apocalyptic number.

212445907 is a deficient number, since it is larger than the sum of its proper divisors (1).

212445907 is an equidigital number, since it uses as much as digits as its factorization.

212445907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 212445907 is about 14575.5242444311. The cubic root of 212445907 is about 596.6909570891.

The spelling of 212445907 in words is "two hundred twelve million, four hundred forty-five thousand, nine hundred seven".