2041121009 has 2 divisors, whose sum is σ = 2041121010. Its totient is φ = 2041121008.

The previous prime is 2041120981. The next prime is 2041121011. The reversal of 2041121009 is 9001211402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1451991025 + 589129984 = 38105^2 + 24272^2 .

It is a cyclic number.

It is not a de Polignac number, because 2041121009 - 2²⁴ = 2024343793 is a prime.

Together with 2041121011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2041121059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020560504 + 1020560505.

It is an arithmetic number, because the mean of its divisors is an integer number (1020560505).

Almost surely, 2^2041121009 is an apocalyptic number.

It is an amenable number.

2041121009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2041121009 is an equidigital number, since it uses as much as digits as its factorization.

2041121009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2041121009 is about 45178.7672363910. The cubic root of 2041121009 is about 1268.4974084455.

The spelling of 2041121009 in words is "two billion, forty-one million, one hundred twenty-one thousand, nine".