111189109912 has 16 divisors (see below), whose sum is σ = 210324534840. Its totient is φ = 55102567296.

The previous prime is 111189109897. The next prime is 111189109939. The reversal of 111189109912 is 219901981111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61497498 + ... + 61499305.

Almost surely, 2^111189109912 is an apocalyptic number.

It is an amenable number.

111189109912 is a deficient number, since it is larger than the sum of its proper divisors (99135424928).

111189109912 is a wasteful number, since it uses less digits than its factorization.

111189109912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122996922 (or 122996918 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 43.

The spelling of 111189109912 in words is "one hundred eleven billion, one hundred eighty-nine million, one hundred nine thousand, nine hundred twelve".