111108888901 has 2 divisors, whose sum is σ = 111108888902. Its totient is φ = 111108888900.

The previous prime is 111108888887. The next prime is 111108888923. The reversal of 111108888901 is 109888801111.

It is a Cunningham number, because it is equal to 333330²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111108888900 + 1 = 333330^2 + 1^2 .

It is an emirp because it is prime and its reverse (109888801111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111108888901 - 2¹¹ = 111108886853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111108888001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55554444450 + 55554444451.

It is an arithmetic number, because the mean of its divisors is an integer number (55554444451).

Almost surely, 2^111108888901 is an apocalyptic number.

It is an amenable number.

111108888901 is a deficient number, since it is larger than the sum of its proper divisors (1).

111108888901 is an equidigital number, since it uses as much as digits as its factorization.

111108888901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 46.

The spelling of 111108888901 in words is "one hundred eleven billion, one hundred eight million, eight hundred eighty-eight thousand, nine hundred one".