1100100199909 has 2 divisors, whose sum is σ = 1100100199910. Its totient is φ = 1100100199908.

The previous prime is 1100100199817. The next prime is 1100100199921. The reversal of 1100100199909 is 9099910010011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 853212453025 + 246887746884 = 923695^2 + 496878^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100100199909 - 2¹⁹ = 1100099675621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100100199409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550050099954 + 550050099955.

It is an arithmetic number, because the mean of its divisors is an integer number (550050099955).

Almost surely, 2^{1100100199909} is an apocalyptic number.

It is an amenable number.

1100100199909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100100199909 is an equidigital number, since it uses as much as digits as its factorization.

1100100199909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 40.

The spelling of 1100100199909 in words is "one trillion, one hundred billion, one hundred million, one hundred ninety-nine thousand, nine hundred nine".