2002111199909 has 2 divisors, whose sum is σ = 2002111199910. Its totient is φ = 2002111199908.

The previous prime is 2002111199813. The next prime is 2002111199917. The reversal of 2002111199909 is 9099911112002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1476164250625 + 525946949284 = 1214975^2 + 725222^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002111199909 - 2⁸ = 2002111199653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2002111199909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002111199929) 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, 1001055599954 + 1001055599955.

It is an arithmetic number, because the mean of its divisors is an integer number (1001055599955).

Almost surely, 2^{2002111199909} is an apocalyptic number.

It is an amenable number.

2002111199909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002111199909 is an equidigital number, since it uses as much as digits as its factorization.

2002111199909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 44.

The spelling of 2002111199909 in words is "two trillion, two billion, one hundred eleven million, one hundred ninety-nine thousand, nine hundred nine".