212101601728 has 14 divisors (see below), whose sum is σ = 420889116056. Its totient is φ = 106050800832.

The previous prime is 212101601717. The next prime is 212101601729. The reversal of 212101601728 is 827106101212.

It is a self number, because there is not a number n which added to its sum of digits gives 212101601728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101601729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1657043700 + ... + 1657043827.

Almost surely, 2^212101601728 is an apocalyptic number.

It is an amenable number.

212101601728 is a deficient number, since it is larger than the sum of its proper divisors (208787514328).

212101601728 is an equidigital number, since it uses as much as digits as its factorization.

212101601728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314087539 (or 3314087529 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 31.

The spelling of 212101601728 in words is "two hundred twelve billion, one hundred one million, six hundred one thousand, seven hundred twenty-eight".