2112001121 has 2 divisors, whose sum is σ = 2112001122. Its totient is φ = 2112001120.

The previous prime is 2112001117. The next prime is 2112001141. The reversal of 2112001121 is 1211002112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1123590400 + 988410721 = 33520^2 + 31439^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112001121 - 2² = 2112001117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2112001141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056000560 + 1056000561.

It is an arithmetic number, because the mean of its divisors is an integer number (1056000561).

Almost surely, 2^2112001121 is an apocalyptic number.

It is an amenable number.

2112001121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112001121 is an equidigital number, since it uses as much as digits as its factorization.

2112001121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2112001121 is about 45956.5133686184. The cubic root of 2112001121 is about 1283.0139589961.

Adding to 2112001121 its reverse (1211002112), we get a palindrome (3323003233).

Subtracting from 2112001121 its reverse (1211002112), we obtain a palindrome (900999009).

The spelling of 2112001121 in words is "two billion, one hundred twelve million, one thousand, one hundred twenty-one".