111108888887 has 2 divisors, whose sum is σ = 111108888888. Its totient is φ = 111108888886.

The previous prime is 111108888841. The next prime is 111108888901. The reversal of 111108888887 is 788888801111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111108888887 - 2¹² = 111108884791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111108888287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55554444443 + 55554444444.

It is an arithmetic number, because the mean of its divisors is an integer number (55554444444).

Almost surely, 2^111108888887 is an apocalyptic number.

111108888887 is a deficient number, since it is larger than the sum of its proper divisors (1).

111108888887 is an equidigital number, since it uses as much as digits as its factorization.

111108888887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1835008, while the sum is 59.

The spelling of 111108888887 in words is "one hundred eleven billion, one hundred eight million, eight hundred eighty-eight thousand, eight hundred eighty-seven".