1001111099 has 2 divisors, whose sum is σ = 1001111100. Its totient is φ = 1001111098.

The previous prime is 1001111093. The next prime is 1001111107. The reversal of 1001111099 is 9901111001.

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-1001111099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001111093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500555549 + 500555550.

It is an arithmetic number, because the mean of its divisors is an integer number (500555550).

Almost surely, 2^1001111099 is an apocalyptic number.

1001111099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001111099 is an equidigital number, since it uses as much as digits as its factorization.

1001111099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 23.

The square root of 1001111099 is about 31640.3397421709. The cubic root of 1001111099 is about 1000.3702292467.

The spelling of 1001111099 in words is "one billion, one million, one hundred eleven thousand, ninety-nine".