212111020201 has 2 divisors, whose sum is σ = 212111020202. Its totient is φ = 212111020200.

The previous prime is 212111020171. The next prime is 212111020237. The reversal of 212111020201 is 102020111212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174105907600 + 38005112601 = 417260^2 + 194949^2 .

It is a cyclic number.

It is not a de Polignac number, because 212111020201 - 2²³ = 212102631593 is a prime.

It is not a weakly prime, because it can be changed into another prime (212111020291) 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 as a sum of consecutive naturals, namely, 106055510100 + 106055510101.

It is an arithmetic number, because the mean of its divisors is an integer number (106055510101).

Almost surely, 2^212111020201 is an apocalyptic number.

It is an amenable number.

212111020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

212111020201 is an equidigital number, since it uses as much as digits as its factorization.

212111020201 is an odious number, because the sum of its binary digits is odd.

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

Adding to 212111020201 its reverse (102020111212), we get a palindrome (314131131413).

The spelling of 212111020201 in words is "two hundred twelve billion, one hundred eleven million, twenty thousand, two hundred one".