111242817188 has 6 divisors (see below), whose sum is σ = 194674930086. Its totient is φ = 55621408592.

The previous prime is 111242817167. The next prime is 111242817209. The reversal of 111242817188 is 881718242111.

It is an interprime number because it is at equal distance from previous prime (111242817167) and next prime (111242817209).

It can be written as a sum of positive squares in only one way, i.e., 64486539364 + 46756277824 = 253942^2 + 216232^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13905352145 + ... + 13905352152.

It is an arithmetic number, because the mean of its divisors is an integer number (32445821681).

Almost surely, 2^111242817188 is an apocalyptic number.

It is an amenable number.

111242817188 is a deficient number, since it is larger than the sum of its proper divisors (83432112898).

111242817188 is a wasteful number, since it uses less digits than its factorization.

111242817188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27810704301 (or 27810704299 counting only the distinct ones).

The product of its digits is 57344, while the sum is 44.

The spelling of 111242817188 in words is "one hundred eleven billion, two hundred forty-two million, eight hundred seventeen thousand, one hundred eighty-eight".