212100727 has 2 divisors, whose sum is σ = 212100728. Its totient is φ = 212100726.

The previous prime is 212100709. The next prime is 212100739. The reversal of 212100727 is 727001212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212100727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212100698 and 212100707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212100127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106050363 + 106050364.

It is an arithmetic number, because the mean of its divisors is an integer number (106050364).

Almost surely, 2^212100727 is an apocalyptic number.

212100727 is a deficient number, since it is larger than the sum of its proper divisors (1).

212100727 is an equidigital number, since it uses as much as digits as its factorization.

212100727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 212100727 is about 14563.6783471759. The cubic root of 212100727 is about 596.3676160582.

Adding to 212100727 its reverse (727001212), we get a palindrome (939101939).

The spelling of 212100727 in words is "two hundred twelve million, one hundred thousand, seven hundred twenty-seven".