2112421001 has 2 divisors, whose sum is σ = 2112421002. Its totient is φ = 2112421000.

The previous prime is 2112420991. The next prime is 2112421013. The reversal of 2112421001 is 1001242112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1560171001 + 552250000 = 39499^2 + 23500^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112421001 - 2³⁰ = 1038679177 is a prime.

It is not a weakly prime, because it can be changed into another prime (2112421021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056210500 + 1056210501.

It is an arithmetic number, because the mean of its divisors is an integer number (1056210501).

Almost surely, 2^2112421001 is an apocalyptic number.

It is an amenable number.

2112421001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112421001 is an equidigital number, since it uses as much as digits as its factorization.

2112421001 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 14.

The square root of 2112421001 is about 45961.0813732662. The cubic root of 2112421001 is about 1283.0989772915.

Adding to 2112421001 its reverse (1001242112), we get a palindrome (3113663113).

The spelling of 2112421001 in words is "two billion, one hundred twelve million, four hundred twenty-one thousand, one".