11001111099987 has 8 divisors (see below), whose sum is σ = 14669737868736. Its totient is φ = 7333279198952.

The previous prime is 11001111099919. The next prime is 11001111100013. The reversal of 11001111099987 is 78999011110011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11001111099987 - 2¹¹ = 11001111097939 is a prime.

It is a super-2 number, since 2×11001111099987² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11001111099787) 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 in 7 ways as a sum of consecutive naturals, for example, 198684633 + ... + 198739994.

It is an arithmetic number, because the mean of its divisors is an integer number (1833717233592).

Almost surely, 2^{11001111099987} is an apocalyptic number.

11001111099987 is a deficient number, since it is larger than the sum of its proper divisors (3668626768749).

11001111099987 is an equidigital number, since it uses as much as digits as its factorization.

11001111099987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397433857.

The product of its (nonzero) digits is 40824, while the sum is 48.

The spelling of 11001111099987 in words is "eleven trillion, one billion, one hundred eleven million, ninety-nine thousand, nine hundred eighty-seven".