212125703 has 2 divisors, whose sum is σ = 212125704. Its totient is φ = 212125702.

The previous prime is 212125679. The next prime is 212125717. The reversal of 212125703 is 307521212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212125703 - 2¹² = 212121607 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212125723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106062851 + 106062852.

It is an arithmetic number, because the mean of its divisors is an integer number (106062852).

Almost surely, 2^212125703 is an apocalyptic number.

212125703 is a deficient number, since it is larger than the sum of its proper divisors (1).

212125703 is an equidigital number, since it uses as much as digits as its factorization.

212125703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 212125703 is about 14564.5357976147. The cubic root of 212125703 is about 596.3910236363.

Adding to 212125703 its reverse (307521212), we get a palindrome (519646915).

The spelling of 212125703 in words is "two hundred twelve million, one hundred twenty-five thousand, seven hundred three".