2100412009 has 2 divisors, whose sum is σ = 2100412010. Its totient is φ = 2100412008.

The previous prime is 2100411983. The next prime is 2100412063. The reversal of 2100412009 is 9002140012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1652666409 + 447745600 = 40653^2 + 21160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100412009 - 2⁷ = 2100411881 is a prime.

It is not a weakly prime, because it can be changed into another prime (2100412079) 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, 1050206004 + 1050206005.

It is an arithmetic number, because the mean of its divisors is an integer number (1050206005).

Almost surely, 2^2100412009 is an apocalyptic number.

It is an amenable number.

2100412009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100412009 is an equidigital number, since it uses as much as digits as its factorization.

2100412009 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 19.

The square root of 2100412009 is about 45830.2521158241. The cubic root of 2100412009 is about 1280.6629071526.

The spelling of 2100412009 in words is "two billion, one hundred million, four hundred twelve thousand, nine".