212102200120201 has 4 divisors (see below), whose sum is σ = 212300611908100. Its totient is φ = 211903788332304.

The previous prime is 212102200120199. The next prime is 212102200120211. The reversal of 212102200120201 is 102021002201212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67830295887225 + 144271904232976 = 8235915^2 + 12011324^2 .

It is a cyclic number.

It is not a de Polignac number, because 212102200120201 - 2¹ = 212102200120199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212102200120211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99205892346 + ... + 99205894483.

It is an arithmetic number, because the mean of its divisors is an integer number (53075152977025).

Almost surely, 2^{212102200120201} is an apocalyptic number.

It is an amenable number.

212102200120201 is a deficient number, since it is larger than the sum of its proper divisors (198411787899).

212102200120201 is a wasteful number, since it uses less digits than its factorization.

212102200120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198411787898.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212102200120201 its reverse (102021002201212), we get a palindrome (314123202321413).

The spelling of 212102200120201 in words is "two hundred twelve trillion, one hundred two billion, two hundred million, one hundred twenty thousand, two hundred one".