2001240211 has 2 divisors, whose sum is σ = 2001240212. Its totient is φ = 2001240210.

The previous prime is 2001240209. The next prime is 2001240257. The reversal of 2001240211 is 1120421002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001240211 - 2¹ = 2001240209 is a prime.

Together with 2001240209, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2001240191 and 2001240200.

It is not a weakly prime, because it can be changed into another prime (2001240011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000620105 + 1000620106.

It is an arithmetic number, because the mean of its divisors is an integer number (1000620106).

Almost surely, 2^2001240211 is an apocalyptic number.

2001240211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001240211 is an equidigital number, since it uses as much as digits as its factorization.

2001240211 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 13.

The square root of 2001240211 is about 44735.2233815815. The cubic root of 2001240211 is about 1260.1814240733.

Adding to 2001240211 its reverse (1120421002), we get a palindrome (3121661213).

The spelling of 2001240211 in words is "two billion, one million, two hundred forty thousand, two hundred eleven".