1100111099987 has 2 divisors, whose sum is σ = 1100111099988. Its totient is φ = 1100111099986.

The previous prime is 1100111099959. The next prime is 1100111100007. The reversal of 1100111099987 is 7899901110011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1100111099987 - 2³⁰ = 1099037358163 is a prime.

It is a super-2 number, since 2×1100111099987² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1100111099917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550055549993 + 550055549994.

It is an arithmetic number, because the mean of its divisors is an integer number (550055549994).

Almost surely, 2^{1100111099987} is an apocalyptic number.

1100111099987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100111099987 is an equidigital number, since it uses as much as digits as its factorization.

1100111099987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 47.

The spelling of 1100111099987 in words is "one trillion, one hundred billion, one hundred eleven million, ninety-nine thousand, nine hundred eighty-seven".