2003112109811 has 2 divisors, whose sum is σ = 2003112109812. Its totient is φ = 2003112109810.

The previous prime is 2003112109783. The next prime is 2003112109891. The reversal of 2003112109811 is 1189012113002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2003112109811 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2003112109891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001556054905 + 1001556054906.

It is an arithmetic number, because the mean of its divisors is an integer number (1001556054906).

Almost surely, 2^{2003112109811} is an apocalyptic number.

2003112109811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003112109811 is an equidigital number, since it uses as much as digits as its factorization.

2003112109811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 2003112109811 in words is "two trillion, three billion, one hundred twelve million, one hundred nine thousand, eight hundred eleven".