1000120999811 has 2 divisors, whose sum is σ = 1000120999812. Its totient is φ = 1000120999810.

The previous prime is 1000120999793. The next prime is 1000121000009. The reversal of 1000120999811 is 1189990210001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000120999811 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000120999411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500060499905 + 500060499906.

It is an arithmetic number, because the mean of its divisors is an integer number (500060499906).

Almost surely, 2^{1000120999811} is an apocalyptic number.

1000120999811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000120999811 is an equidigital number, since it uses as much as digits as its factorization.

1000120999811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 41.

The spelling of 1000120999811 in words is "one trillion, one hundred twenty million, nine hundred ninety-nine thousand, eight hundred eleven".