212212221010201 has 4 divisors (see below), whose sum is σ = 212318699798452. Its totient is φ = 212105742221952.

The previous prime is 212212221010199. The next prime is 212212221010217. The reversal of 212212221010201 is 102010122212212.

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 81921958655625 + 130290262354576 = 9051075^2 + 11414476^2 .

It is a cyclic number.

It is not a de Polignac number, because 212212221010201 - 2¹ = 212212221010199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212212221010271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53239391136 + ... + 53239395121.

It is an arithmetic number, because the mean of its divisors is an integer number (53079674949613).

Almost surely, 2^{212212221010201} is an apocalyptic number.

It is an amenable number.

212212221010201 is a deficient number, since it is larger than the sum of its proper divisors (106478788251).

212212221010201 is a wasteful number, since it uses less digits than its factorization.

212212221010201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106478788250.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212212221010201 its reverse (102010122212212), we get a palindrome (314222343222413).

The spelling of 212212221010201 in words is "two hundred twelve trillion, two hundred twelve billion, two hundred twenty-one million, ten thousand, two hundred one".