111001109887 has 2 divisors, whose sum is σ = 111001109888. Its totient is φ = 111001109886.

The previous prime is 111001109873. The next prime is 111001109893. The reversal of 111001109887 is 788901100111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111001109887 - 2³¹ = 108853626239 is a prime.

It is a super-2 number, since 2×111001109887² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111001199887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500554943 + 55500554944.

It is an arithmetic number, because the mean of its divisors is an integer number (55500554944).

Almost surely, 2^111001109887 is an apocalyptic number.

111001109887 is a deficient number, since it is larger than the sum of its proper divisors (1).

111001109887 is an equidigital number, since it uses as much as digits as its factorization.

111001109887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 37.

Adding to 111001109887 its reverse (788901100111), we get a palindrome (899902209998).

The spelling of 111001109887 in words is "one hundred eleven billion, one million, one hundred nine thousand, eight hundred eighty-seven".