212101201 has 4 divisors (see below), whose sum is σ = 228416692. Its totient is φ = 195785712.

The previous prime is 212101181. The next prime is 212101207. The reversal of 212101201 is 102101212.

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 51825601 + 160275600 = 7199^2 + 12660^2 .

It is a cyclic number.

It is not a de Polignac number, because 212101201 - 2²¹ = 210004049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212101207) 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 in 3 ways as a sum of consecutive naturals, for example, 8157726 + ... + 8157751.

It is an arithmetic number, because the mean of its divisors is an integer number (57104173).

Almost surely, 2^212101201 is an apocalyptic number.

It is an amenable number.

212101201 is a deficient number, since it is larger than the sum of its proper divisors (16315491).

212101201 is a wasteful number, since it uses less digits than its factorization.

212101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16315490.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 212101201 is about 14563.6946205281. The cubic root of 212101201 is about 596.3680603095.

Adding to 212101201 its reverse (102101212), we get a palindrome (314202413).

The spelling of 212101201 in words is "two hundred twelve million, one hundred one thousand, two hundred one".