212012121111201 has 24 divisors (see below), whose sum is σ = 307382487350120. Its totient is φ = 140814111350016.

The previous prime is 212012121111199. The next prime is 212012121111239. The reversal of 212012121111201 is 102111121210212.

It is a happy number.

212012121111201 is a `hidden beast` number, since 2 + 120 + 121 + 211 + 11 + 201 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 21431335101201 + 190580786010000 = 4629399^2 + 13805100^2 .

It is not a de Polignac number, because 212012121111201 - 2¹ = 212012121111199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212012121111601) 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 23 ways as a sum of consecutive naturals, for example, 15472341 + ... + 25756893.

Almost surely, 2^{212012121111201} is an apocalyptic number.

It is an amenable number.

212012121111201 is a deficient number, since it is larger than the sum of its proper divisors (95370366238919).

212012121111201 is a wasteful number, since it uses less digits than its factorization.

212012121111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10293105 (or 10293102 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 212012121111201 its reverse (102111121210212), we get a palindrome (314123242321413).

The spelling of 212012121111201 in words is "two hundred twelve trillion, twelve billion, one hundred twenty-one million, one hundred eleven thousand, two hundred one".