212101210201 has 4 divisors (see below), whose sum is σ = 212121217152. Its totient is φ = 212081203252.

The previous prime is 212101210187. The next prime is 212101210259. The reversal of 212101210201 is 102012101212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212101210201 - 2¹¹ = 212101208153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212101210261) 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 in 3 ways as a sum of consecutive naturals, for example, 9987565 + ... + 10008778.

It is an arithmetic number, because the mean of its divisors is an integer number (53030304288).

Almost surely, 2^212101210201 is an apocalyptic number.

It is an amenable number.

212101210201 is a deficient number, since it is larger than the sum of its proper divisors (20006951).

212101210201 is a wasteful number, since it uses less digits than its factorization.

212101210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20006950.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212101210201 its reverse (102012101212), we get a palindrome (314113311413).

The spelling of 212101210201 in words is "two hundred twelve billion, one hundred one million, two hundred ten thousand, two hundred one".