2112012221101 has 2 divisors, whose sum is σ = 2112012221102. Its totient is φ = 2112012221100.

The previous prime is 2112012221093. The next prime is 2112012221129. The reversal of 2112012221101 is 1011222102112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1838394303876 + 273617917225 = 1355874^2 + 523085^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112012221101 - 2³ = 2112012221093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112012221131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056006110550 + 1056006110551.

It is an arithmetic number, because the mean of its divisors is an integer number (1056006110551).

Almost surely, 2^{2112012221101} is an apocalyptic number.

It is an amenable number.

2112012221101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112012221101 is an equidigital number, since it uses as much as digits as its factorization.

2112012221101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2112012221101 its reverse (1011222102112), we get a palindrome (3123234323213).

The spelling of 2112012221101 in words is "two trillion, one hundred twelve billion, twelve million, two hundred twenty-one thousand, one hundred one".